ArticlePDF Available

Citizens' juries give verdict on whether private practice veterinarians should attend unvaccinated Hendra virus suspect horses

Authors:
  • Department of Agriculture Fisheries and Forestry University of Sydney
  • Private Equine Veterinary Practice, Brisbane Queensland, Australia

Abstract and Figures

Background Hendra virus (HeV) is endemic in Australian flying foxes, posing a threat to equine and human health. Equine vaccination remains the most effective risk mitigation strategy. Many horses remain unvaccinated – even in higher‐risk regions. Debate surrounding the vaccine's use is characterised by conflicting perspectives, misunderstanding and mistrust. Private veterinary practitioners are critical to early identification of public health risk through recognition, sampling and management of suspect‐equine‐HeV‐cases. However, managing such cases can be burdensome, with some veterinarians opting not to attend unvaccinated horses or to abandon equine practice because of risk posed by HeV disease and liability. Objective Ascertain the perspectives of informed citizens on what obligations (if any) private veterinarians have to attend unvaccinated horses with HeV or HeV‐like disease. Methods Three citizens' juries were tasked with considering approaches to managing HeV risk in Australia, including (reported here) roles and obligations of private veterinarians in responding to HeV‐suspect‐cases. Results Jurors acknowledged that HeV management posed an important challenge for private veterinarians. A clear majority (27 of 31 jurors) voted that veterinarians should not be obliged to attend unvaccinated horses. All recognised that greater support for veterinarians should be a priority. Conclusions When informed of HeV risks and strategies for control and management, citizens appreciated the need to support veterinarians performing this critical ‘One Health’ role for public benefit. The current governance framework within which zoonotic disease recognition and response operates limits the contingency and scope for increasing support and efficacy of these important veterinary public health practices.
Content may be subject to copyright.
ORIGINAL ARTICLE
Citizensjuries give verdict on whether private practice veterinarians
should attend unvaccinated Hendra virus suspect horses
EJ Annand,
a,b,c,d
* PA Reid,
e
J Johnson,
b,f,g
GL Gilbert,
b,f
M Taylor,
g
M Walsh,
b,f
MP Ward,
a,b
A Wilson
h
and C Degeling
i
Background Hendra virus (HeV) is endemic in Australian ying
foxes, posing a threat to equine and human health. Equine vacci-
nation remains the most effective risk mitigation strategy. Many
horses remain unvaccinated even in higher-risk regions. Debate
surrounding the vaccines use is characterised by conicting per-
spectives, misunderstanding and mistrust. Private veterinary prac-
titioners are critical to early identication of public health risk
through recognition, sampling and management of suspect-
equine-HeV-cases. However, managing such cases can be burden-
some, with some veterinarians opting not to attend unvaccinated
horses or to abandon equine practice because of risk posed by
HeV disease and liability.
Objective Ascertain the perspectives of informed citizens on
what obligations (if any) private veterinarians have to attend
unvaccinated horses with HeV or HeV-like disease.
Methods Three citizensjuries were tasked with considering
approaches to managing HeV risk in Australia, including (reported
here) roles and obligations of private veterinarians in responding
to HeV-suspect-cases.
Results Jurors acknowledged that HeV management posed an
important challenge for private veterinarians. A clear majority (27
of 31 jurors) voted that veterinarians should not be obliged to
attend unvaccinated horses. All recognised that greater support
for veterinarians should be a priority.
Conclusions When informed of HeV risks and strategies for con-
trol and management, citizens appreciated the need to support
veterinarians performing this critical One Healthrole for public
benet. The current governance framework within which zoonotic
disease recognition and response operates limits the contingency
and scope for increasing support and efcacy of these important
veterinary public health practices.
Keywords community-based participatory research; Hendra
virus; One health; syndromic surveillance; vaccines; Zoonoses
Aust Vet J 2020 doi: 10.1111/avj.12957
Hendra virus (HeV) infection is endemic in Australian y-
ing fox populations. Since rst identied in 1994, HeV is
known to have infected horses on 62 occasions resulting in
104 horse fatalities and zoonotic transmission resulting in four
human fatalities. Three of the four human deaths resulted from
occupational exposure. Horse-husbandry and infection control prac-
tices that aim to reduce equine risk exposure have been promoted
since 1995. However, the efcacy of these practices is unknown, and
many owners and veterinarians nd the recommended changes dif-
cult and expensive to implement.
1,2
An equine vaccine against HeV
has proven 100% effective in preventing infection and more than
150,000 horses have been vaccinated since its release in November
2012. Despite equine veterinarians, animal biosecurity agencies and
Workplace Health and Safety (WHS) regulators continually
emphasising that vaccination of horses is the most effective HeV risk
mitigation strategy, many owners choose not to vaccinate even in
areas assessed to be at relatively high risk of infection. Reasons cited
by these owners include perceived low likelihood of HeV disease,
vaccine cost (Veterinary administration required at approximately
$100 AUD/dose with annual boosters required after an initial course
of two doses between 3 and 6 weeks apart and a booster at 6-
months), potential adverse reactions or compromised sporting per-
formance and risk of export and international travel restrictions for
vaccinated horses to some countries.
35
Horse owners, equine organisations and veterinarians all have obli-
gations to mitigate and manage HeV risks as best as is reasonably
practicable.
68
Given the potentially catastrophic impact of HeV
infection in humans, strict personal protective equipment (PPE) and
biosecurity protocols are essential when managing potentially
infected horses. Both the Work Health and Safety Act 2011 (WHS
Act) and Biosecurity Act 2015 (2014 Qld/2015 NSW) legislations,
interpreted at the state level, place a shared obligation on horse
owners and veterinarians to prevent or minimize HeV disease
risks.
7,8
Both Acts support a shared approachto managing the
work, health and safety (WHS) obligations of people and organisa-
tions so that the economy, the environment and the community are
protected.
6
As is consistent for zoonotic disease occurring in all nonproduction
animal species in Australia, equine HeV disease recognition and
sampling is most often carried out by private veterinarians. The costs
*Corresponding author.
a
The University of Sydney, School of Veterinary Science, Sydney, New South Wales,
Australia; ed.annand@sydney.edu.au
b
The University of Sydney, Marie Bashir Institute for Infectious Diseases and
Biosecurity, Sydney, New South Wales, Australia
c
CSIRO, Health and Biosecurity, Canberra, Australian Capital Territory, Australia
d
Equine Veterinary and Epidemiology Services, EquiEpiVet, Berrima, New South
Wales, Australia
e
Private Equine Veterinary Practice, Brisbane, Queensland, Australia
f
The University of Sydney, Sydney Health Ethics, Sydney, New South Wales, Austral ia
g
Department of Psychology, Macquarie University, Sydney, New South Wales,
Australia
h
The University of Sydney, Menzies Centre for Health Policy, Sydney, New South
Wales, Australia
i
University of Wollongong, Australian Centre for Health Engagement, Evidence and
Values, Wollongong, New South Wales, Australia
EQUINE
AUSTRALIA’S
PREMIER VETERINARY
SCIENCE TEXT
EQUINE
© 2020 Australian Veterinary Association Australian Veterinary Journal 1
of molecular and serology testing of potential HeV cases are covered
by the State Government Departments of Agriculture (as for other
notiable diseases). Government veterinarians are obliged to investi-
gate cases where there is a genuine suspicion of a notiable disease
and yet, as in many countries, Australian government veterinary ser-
vices are insufciently resourced to undertake this activity across all
species and regions, particularly for nonproduction species such as
horses. New South Wales (NSW) has the most effective coverage of
government veterinarians through the Local Land Services (LLS) vet-
erinary service (funded by the NSW Government, the federal gov-
ernment National Landcare Program and rural ratepayers). While
many HeV investigations are carried out by LLS veterinarians, their
animal health service priority is on production animal species.
9
State
Government Departments acknowledge that attending HeV suspect
cases is optional rather than an obligation for private veterinarians
but that private equine practitioners remain highly suitable and
important rst responders to suspect HeV cases. Australian veteri-
nary graduates are obliged to uphold an ethical code comparable to
those of human medical practitioners, to practice veterinary science
ethically and conscientiously for the benet of animal welfare; ani-
mal and human health; users of veterinary services; and, the commu-
nity. However, as for human medicine, these are not binding or
enforceable agreements and have not been consistent between gradu-
ating cohorts over time or between institutions.
10,11
Horses infected with HeV experience a usually fatal acute disease
mediated by an endothelial vasculitis.
12
Infected horses usually show
respiratory and/or neurological signs with a rapid clinical disease
progression, although signs can be variable and even discreet.
12
The
potential for infectious virus to be shed before the recognition of
clinical disease adds to the difculty in managing risk in
unvaccinated horses. Veterinarians most experienced in clinical
equine practice remain the most capable for the recognition of sus-
pect cases via pathogenesis-orientated consideration of disease
presentation.
12
Veterinarians in private practice who attend sick, unvaccinated
horses are performing a public health role. Some private practi-
tioners nd themselves between a rock and a hard placedue to the
burdens and stressors involved in managing HeV risk in
unvaccinated horses. If they do not attend suspected equine HeV
cases, members of the public are potentially at risk of exposure, and
prompt case recognition and prevention of potentially fatal human
disease is jeopardized. If veterinarians do attend, they are confronted
by substantial health and nancial risks, as well as WHS and
Biosecurity legislative obligations. They also face indemnity liability
obligations in a context in which they have limited control of the
actions of others and restricted treatment options. In HeV endemic
regions, many veterinarians have felt the need to restrict their con-
sultation to vaccinated horses, while others have stopped attending
horses altogether or moved to practice in lower risk regions.
1315
A
Queensland Parliamentary Inquiry into the vaccine and its use by
veterinarians (which included consideration of the WHS prosecu-
tions of three private veterinarians) highlighted the challenges that
veterinarians face.
15,16
The rise of One Health approaches to managing HeV disease in Aus-
tralia has increased awareness of zoonotic emerging infectious
diseases and augmented effective disease surveillance and response
networks between human and animal health sectors. However, this
increased awareness of previously underappreciated zoonotic disease
has highlighted the limitations and barriers to effective One Health
detection and response under the current Australian policy and gov-
ernance framework. Internationally the differing aims and institu-
tional separation of human and animal health disciplines are
recognized as problematic,
1719
leading to countries such as the US
and Denmark establishing specic One Health interagency structures
to better co-ordinate human, animal and environmental agency
responses to zoonotic risks.
20,21
In Australia, the Queensland (QLD)
Government formed an unfunded Hendra Virus Interagency Techni-
cal Working Group in 2011, which included animal health and
human health experts, with the aim of identifying best practice for
the prevention of human infection. The group published technical
advice online in 2014.
22
The Tripartite alliance of the World Organi-
sation for Animal Health (OIE), World Health Organisation (WHO)
and the Food and Agricultural Organisation of the United Nations
(FAO) has recently published guidelines for countries for responding
to and managing zoonotic disease that highlight ways in which the
different sectors could best work together.
23
It is against this background that we present ndings from three citi-
zens juries convened between August 2017 and March 2018 to con-
sider issues surrounding how Australia should manage the risks of
HeV spillover, including the obligations of veterinarians. After out-
lining these ndings, we discuss the current framework within which
One Health zoonotic disease surveillance and response operates
within Australia, and the challenges this framework poses for
improving the management of endemic zoonotic diseases.
Materials and Methods
A citizensjury is a process in which a broadly representative group
of citizens are brought together to be educated about and deliberate
on a specic issue.
24
What distinguishes such deliberative methods,
from other research methodologies for eliciting public views, is the
structured and constructive process of information exchange, and
the opportunities for developing knowledge between experts and
members of the public towards informing policy.
25
The method
assumes that people can think rationally and change their views
should the evidence warrant it.
26
Citizen jury processes aim to pro-
vide citizens with the conditions for their making informed decisions
that reect their authentic preferences. Citizensjuries are a delibera-
tive method with these general characteristics:
1A group of citizens is convened for 13 days;
2They are asked to consider a specic issue;
3They hear evidence (sometimes conicting) from a range of rele-
vant experts, to whom they are then given the opportunity to ask
questions;
They are given time for deliberation and to arrive at reasoned con-
clusions, all of which are documented. A small sample size is consid-
ered necessary for high-quality deliberation. Citizensjuries
convened to consider issues surrounding infectious disease control
and prevention have been greatly informative in Australia and
internationally.
27,28
Australian Veterinary Journal © 2020 Australian Veterinary Association
2
EQUINE
EQUINE
Study setting
In this study, citizensjuries were convened in Rockhampton (QLD),
Lismore and Sydney (NSW) to elicit views of well-informed members
of the public on (1) the permissibility and perceived legitimacy of using
ecological approaches to manage the risks of HeV spillover, and (2) the
social and ethical obligations veterinarians might have when requested
to attend horses considered potentially infected with HeV. Jurors had
the option to vote for or against each proposal and provide a set of rec-
ommendations in response to the questions. Rockhampton and Lismore
are both regional centres in rural areas on the eastern seaboard of Aus-
tralia; both have been affected by local HeV outbreaks. The capital of
NSW, Sydney is a coastal metropolis located further south than the
other study settings. Home to a large racing and recreational horse pop-
ulation, Sydney has around 20 permanent ying-fox camps located
across the metropolitan region
29
Sydney is yet to be affected by a case
of HeV disease but in June 2019 a case was identied, which caused
fatal disease in an unvaccinated horse in the Upper Hunter Valley
region north-west of Sydney.
30
HeV has previously been identied by
molecular testing of bat urine collected from under ying fox roosts in
Sydney.
31
The risk of a spillover event occurring further south because
of the altered range of the ying fox reservoir hosts is hypothesised as
being in response to clearing of native food source forests and the
effects of climate change.
32,33
Citizens jury processes
Adult participants (n = 31), of varied backgrounds, genders and ages,
were recruited by an independent professional research service by
random-digit-dialling and a social media advertising campaign
targeting horse owners. Participants were then selected purposively
from the resulting pool to promote sociodemographic diversity
within each group, and to make sure that each jury included partici-
pants who either owned or worked with horses (Table 1).
Each jury commenced with an orientation session to introduce the
process, the questions for consideration and obtain consent. To
ensure that participants were informed about the issue under consid-
eration, each jury was presented with balanced factual evidence
supporting different expert perspectives on the feasibility, benets
and potential cost of different strategies for managing HeV risk, and
given opportunities to ask questions of experts. Jury Day 1 focused
on understanding: basic HeV biology; the socio-economic impact of
HeV emergence; different interventions to manage infection risks;
common clinical and practical issues associated with these strategies
and with management of potentially HeV-infected horses; and the
epidemiological evidence for the drivers of HeV emergence (Table 2).
Testimony from four experts was prerecorded and shown to jurors
as video presentations. Experts were selected on the basis of their
institutional roles, experience and expertise, to provide balanced and
factual information supporting different expert perspectives on the
feasibility, benets and potential cost of different strategies for man-
aging HeV risk (equine vaccination; adopting low-risk horse hus-
bandry practices; and ecological approaches). Each presentation ran
for approximately 30 minutes. Prerecording ensured the format of
the evidence presented was standardized across juries.
Expert witness biographies and copies of their presentations are
available online.
34
After each video presentation, the expert was
available by teleconference call or in person for jurors to ask ques-
tions. These question and answer sessions, facilitated by a researcher,
allowed jurors to clarify or question the evidence and opinions pres-
ented. Facilitation focused on promoting constructive dialogue and
fair interaction amongst jurors. Our impression when running the
juries was that constructive dialogue and fair interaction between
jurors continued during unfacilitated sessions a view, which was
later conrmed through a review of the transcripts of jury
proceedings.
For the rst hour of Jury Day 2, jurors reected on, discussed and
debated the evidence, aided by a researcher acting as facilitator.
Juries then deliberated for an hour, without researchers being pre-
sent, to reach a verdict on the questions posed. The verdicts, justify-
ing reasoning and dissenting views, were reported to the research
team in a nal facilitated feedback session. Our research and
reporting processes for these citizensjuries were crosschecked
against the accepted checklist and standards.
35
Jurors were then asked to deliberate and vote on two questions. In
PART A they were asked to consider the acceptability of ecological
approaches to managing the risk of HeV infections. The juriesver-
dicts in response to this question, their reasoning, and a detailed
report on the conduct, content and analysis of each of these delibera-
tive events are reported elsewhere.
36
In this paper we report on the
response of each jury to PART B, which addressed the following
question:
Given the risk of human infection from HeV diseased horses,
should veterinarians and other rst responders be obliged to
attend unvaccinated horses that have clinical signs consistent
with HeV infection?
Table 1. Participants of three citizensjuries convened between August 2017 and March 2018 in Rockhampton (QLD), Lismore and Sydney (NSW) to
consider issues surrounding how Australia should manage the risks of HeV spillover, including the obligations of veterinarians and their verdicts
summarised
Should private vets be obliged to attend unvaccinated horses?
Community jury participant characteristics Final verdict
(n) Owns or works with horses Does not own or work with horses Yes No
Rockhampton 12 6 6 2 10
Lismore 9 5 4 2 7
Sydney 10 3 7 0 10
© 2020 Australian Veterinary Association Australian Veterinary Journal 3
EQUINE
EQUINE
Data collection and analysis
The verdict provided by each of the juries together with the reasons
for their decision are the key outcomes of citizensjury processes.
24,25
Each of the three deliberative groups (juries) acted as a unit of analy-
sis in this study. During the nal session of each jury, a researcher
recorded the verdict and justications on a ipchart. Each point was
reviewed by the jury for accuracy. All jury deliberations (facilitated
and un-facilitated) and expert question and answer sessions were
audio-recorded and transcribed to allow for verication and analysis.
Transcripts were reviewed to identify and clarify jurorsreasoning.
We present a summary of jurorsdescriptions of the rationale and
reasoning that led to their responses to the questions asked of them.
This study was approved by the Human Research Ethics Committee
at The University of Sydney (215/009).
Results
All juries recorded a majority verdict that private practice veterinar-
ians should not be obliged or pressured to attend unvaccinated
horses. They justied their views by considering that the conse-
quences of ownersdecisions not to vaccinate (despite availability
and risk management advice) should not be borne by others. Jurors
who voted this way argued that owners would likely have made a
choice not to provide the best protection for their horses and the
consequent risks and burdens of this decision should not be placed
on veterinarians. The jurorskey concern was that veterinarians
should be able to determine the conditions under which they work
on a case-by-case basis (including minimising personal health risks
to which they are exposed). Veterinarians might have a duty-of-care
Table 2. Description of the four experts, perspectives and topics that addressed each of three citizensjuries convened between August 2017 and
March 2018 in Rockhampton (QLD), Lismore and Sydney (NSW) to consider issues surrounding how Australia should manage the risks of HeV
spillover
Expert testimony provided to the community juries
Expertise Expert area Data provided
1 Epidemiology and analytical methods Professor of veterinary public health
zoonotic disease control and prevention.
The basic science around Hendra virus (e.
g. what it is, the species it impacts, how
the virus spreads, how vaccination
functions);
The threat Hendra poses to human and
animal health; the socio-economic
impacts of Hendra virus emergence
Measures to prevent and manage disease
incidence and spread;
The multifaceted nature of the
enhancing current Hendra spillover
prevention strategies
2 Equine veterinary practice and
epidemiology
Specialised in equine veterinary surgery,
reproduction and emerging infectious
disease
The difculties in diagnosing Hendra
virus infections in horses;
What vaccination of horses involves (cost,
effectiveness and longevity of the
vaccine);
The risks to veterinarians (and other rst
responders) of treating unvaccinated
horses;
The potential impact on industry of an
outbreak of Hendra;
3 Occupational health and psychology Occupational psychology and risk
minimisation in horse husbandry
The content, mechanisms and nature of
behaviour interventions to control
Hendra virus in its ecological context;
The strengths, weaknesses and broader
politics of the different strategies to
prevent and manage the risk of Hendra
virus spillovers changing how people
work with horses, fencing of fruit trees
and covering water troughs, and the
uptake of equine vaccination
4 Landscape epidemiology, wildlife ecology,
emerging infectious disease
Hendra virus ecology, ying-fox population
dynamics
Hendra virus in its ecological context;
The strengths and weaknesses of the
following strategies to prevent and
manage outbreaks of Hendra relocation
of bat colonies, bat culling, and habitat
preservation/restoration
Australian Veterinary Journal © 2020 Australian Veterinary Association
4
EQUINE
EQUINE
for the animal welfare issues associated with not providing care to
sick horses, but it was reasonable for their concerns for their own
personal safety to over-ride this. Some jurors who held this view,
considered the potential that more owners might be convinced to
vaccinate should private veterinarians apply surcharges for attending
HeV suspect cases and/or restrict or decline providing veterinary ser-
vices for unvaccinated horses. They felt awareness of the extra nan-
cial costs of biosecurity management and protocols for veterinarians
and the potential impacts on animal welfare (delayed treatment
whilst waiting for HeV exclusion test results) should encourage
owners to vaccinate their horses against HeV.
Jurors explored and held a range of positions during their delibera-
tions (Table S1). However, when the verdict was reported in Rock-
hampton and Lismore areas that have substantial HeV infection
risks a minority of jurors (Table 1) still held the view that veteri-
narians, trained in the use of PPE, should attend unvaccinated HeV
suspect horses because they are best placed to manage the public
health implications. The four jurors who voted that veterinarians
should attend also expressed an overriding concern about the animal
welfare issues associated with not providing care to sick horses. Most
jurors, including those who voted against placing any obligation on
vets, considered that responding to zoonotic disease risks to be a vet-
erinary professional duty and an important public health role that
veterinarians should occupy. During each groups deliberations,
jurors drew comparisons to reghters and paramedics profes-
sional groups who regularly expose themselves to controlled risks in
order to protect individuals and the community. Mandating equine
vaccination was discussed at each event but was ultimately rejected
because of ethical and pragmatic concerns about making a vaccine
compulsory. Independent of how they voted, all jurors agreed that
veterinarians who responded to potential HeV cases should not have
to bear the associated biosecurity costs such as PPE, sampling and
shipping consumables, procedural, management and training costs.
Establishing effective government subsidy to compensate and sup-
port private veterinarians who respond to potential cases of zoonotic
disease of public health relevance was strongly supported.
Discussion
After the 2 days of information and deliberation, a substantial
majority of jurors at each event voted that veterinarians in private
practice should not be obliged to attend unvaccinated horses. Many
of the jurors reported nding this a very hard question to answer,
given the potential catastrophic consequences of exposure to HeV
for owners and public that come into contact with an infected horse,
while also considering those in other professions and occupations
who often put themselves at risk of harm while performing their
roles. Jurors appreciated the welfare compromises experienced by
unvaccinated ill horses that are subject to delays and restriction of
veterinary treatment until HeV testing had been performed.
37
They
took the position that while veterinarians might have a duty-of-care
for the welfare of sick horses, it is a duty that should be shared by
horse-owners. Private veterinary attendance of potential HeV
infected horses was unanimously appreciated as constituting a criti-
cal and unique benet to public health, and that this important role
should be optimally supported so that individual veterinarians are
not left carrying the substantial associated nancial, WHS and per-
sonal burdens. Jurorsdiscussions around considering the obligations
of veterinarians in attending HeV suspect horses focused on what
veterinarians were owed if they chose to accept responsibility for
managing these challenging cases. On this basis, they concluded that
current systems to manage occupational risks associated with equine
HeV cases are inadequate and that additional government support is
needed. Nurses and reghters perform their roles supported by
large, robust and trusted organisational systems that minimise the
risk of occupation-related harm. Several jurors proposed that mini-
mum support measures, such as a government supplied PPE and a
yearly stipend for veterinary rst responders, should be implemented
to ensure continued and optimised private veterinary involvement in
a public health role of responding to potential cases of zoonotic
disease.
Against this background, the policy framework that governs how
veterinarians respond to suspect zoonotic disease events is complex
and potentially restrictive to meaningful change. In Australia, as for
many countries, challenges include both differing priorities and limi-
tations to prompt data sharing and thus the opportunity for timely
One Healthinterpretation of disease data. Despite the widespread
endorsement of One Health across both animal and human health
agencies in Australia,
38
scope for meaningfully interagency support
of zoonotic disease investigation in animals is limited unless there is
a laboratory-conrmed notiable diagnosis.
18
On a disease-by-dis-
ease and state-by-state basis One Healthdiscussion is carried out
between sectors and in many instances has resulted in improvements
in zoonotic disease operations.
3942
The National Signicant Diseases
Investigation Program (NSDIP) provides limited funds for regis-
tered, nongovernment veterinarians to investigate signicant disease
events, dened as those exhibiting high morbidity and mortality,
rapid spread, effect on public health, trade or production or where
initial investigation has failed to establish a diagnosis.
43,44
While
NSDIP is not intended to support the investigation of established
notiable diseases such as HeV in horses, it does include clinically
similar diseases or diseases showing increasing incidence or an
expanding geographic or host range.
43
It is a promising national ini-
tiative, arguably currently underutilised, promoted mainly for wild-
life and livestock disease with varied support interpretation and
promotion, between jurisdictions. It is unlikely that NSDIP has suf-
cient contingency and resource allocation to bridge the gap required
to adequately support private veterinarians in investigation of poten-
tial zoonotic disease in nonproduction domestic and companion ani-
mal species. As noted above, Government veterinarians are obliged
to investigate suspect notiable disease cases and yet remain under-
resourced to meet this demand across the extensive geography of
Australia, especially if the requirement is for them to attend every
unvaccinated horse with an HeV suspect illness.
Increased support for private-practitioner-rst-responders per-
forming zoonotic disease investigation and risk management within
an optimised One Healthoperational framework of animal, human
and environmental health agencies seems warranted and is strongly
supported by informed citizen opinion. This might best be achieved
by developing specic zoonotic disease capacity with veterinary
© 2020 Australian Veterinary Association Australian Veterinary Journal 5
EQUINE
EQUINE
representation within the human health sector to assess, support,
manage and fund zoonotic disease investigation and management. A
good example of the benet of zoonotic disease consideration
embedded in human health was the parallel consideration of human
and equine cases of West Nile virus in 2002 in Texas, USA, by the
Zoonoses Control Branch of the Texas Department of State Health
Services.
45,46
Failing such optimal change for broad benet, our nd-
ings highlight potential public support for other more specic mea-
sures such as zoonotic disease investigation reimbursement for
attending veterinarians met by government, industry or both.
A limitation to this study, inherent to participatory deliberative
research methods such as citizensjuries, is that despite signicant
effort to collate diverse and representative participants, the necessar-
ily small groups of engaged citizensviews may not represent those
of the target population in this case the wider general public. It is,
however, noteworthy that three juries in different settings came to
similar conclusions. Another limitation was that, due to limitations
in the volume of information that could effectively be conveyed,
jurors were not presented extensive comprehensive details of rele-
vant national legislative framework such as the WHS Act and the
Biosecurity Act in which owners and veterinarians are interpreted as
managing risks as a shared responsibility (at the time of publication).
They were, however, made aware of the shared responsibilityinter-
pretation of the WHS Act prompted by the Queensland Parliamen-
tary Inquiry of 2016. Jurors were explicitly told that there are no
national legislative obligations for private veterinarians to attend and
investigate suspected HeV cases, however, at the time of the juries,
clarity on how noncommercial horse carers utilising veterinary
ambulatory care may be dened under the denition of a PCBU (A
Person Conducting a Business or Undertaking) under the WHS Act
was only recently been available and not widely understood. Jurors
deliberations focused on what it is reasonable to expect of veterinar-
ians beyond and regardless of interpretations of the legislative
framework.
Conclusion
Our ndings highlight that, when informed of relevant legislative
framework and processes surrounding suspected equine HeV cases,
members of the public recognise the challenges faced by private vet-
erinary practitioners in responding to and managing HeV like illness
in horses. Members of the public appreciate the importance of the
private veterinarians roles towards optimising public health and ani-
mal welfare outcomes and the need for improved support for them
by continuing this crucial role.
The structure of policy and governance relating to One Healthzoo-
notic disease investigation, response and management, in Australia,
currently limits the contingency, permanence and adaptability of
meaningful support for private veterinarians undertaking their cru-
cial role. This jury study reports that informed citizens in three sepa-
rate regions, affected by varying HeV disease risk, strongly advocate
that private equine practitioners receive increased support for their
investigation and management of potential zoonotic disease. This
support is likely to be optimised through establishing a specic sec-
tor, which includes veterinary and ecological representation within
Health Departments at multiple levels (national/ state and local) that
considers, prioritises and funds zoonotic disease operations from a
necessary One Healthperspective.
Failing such optimal changes, there is potential for other more spe-
cic interim supportive measures such as zoonotic disease investiga-
tion reimbursement for attending veterinarians met by Government,
industry or both.
Acknowledgments
This work was supported by a Project Grant (APP1083079) from the
National Health and Medical Research Council of Australia to CD,
GLG, MPW and AW. The funder provided support in the form of
salaries for authors CD and JJ, but did not have any role in the study
design, data collection and analysis, decision to publish, or prepara-
tion of the manuscript.
Conicts of interest and sources of funding
The authors declare no conicts of interest or sources of funding for
the work presented here.
References
1. Kung N, McLaughlin A, Taylor M et al. Hendra virus and horse owners Risk
perception and management. PLOS One 2013;8:e80897.
2. Manyweathers J, Field H, Jordan D et al. Risk mitigation of emerging Zoono-
ses: Hendra virus and non-vaccinating horse owners. Transbound Emerg Dis
2017;64:18981911.
3. Schemann K, Annand EJ, Reid PA et al. Investigation of the effect of Equivac®
HeV Hendra virus vaccination on thoroughbred racing performance. Aust Vet J
2018;96:132141.
4. Goyen KA, Wright JD, Cunneen A et al. Playing with re What is inuencing
horse ownersdecisions to not vaccinate their horses against deadly Hendra
virus infection? PLOS One 2017;12:e0180062.
5. Manyweathers J, Field H, Longnecker N et al. Why wont they just vacci-
nate?Horse owner risk perception and uptake of the Hendra virus vaccine.
BMC Vet Res 2017;13:103.
6. Reid PA. Submission No. 200 to the Agriculture and Environment Committee,
Queensland Parliament Hendra virus (HeV) EquiVac®Vaccine and its use by
Veterinary Surgeons in Queensland. Queensland Government, 2016. Available
at: https://www.parliament.qld.gov.au/documents/committees/AEC/2016/
rpt24-09-HendraVirusVacc/submissions/200.pdf.
7. Australian Government. Work health and safety act 2011. No. 137, 2011 July
1, 2018. Available at: https://www.legislation.gov.au/Details/C2018C00293/
Html/Text,http://www.legislation.gov.au/Details/C2018C00293.
8. Australian Government. Biosecurity Act 2015. No. 61. 2015 July 3, 2019. Avail-
able at: https://www.legislation.gov.au/Details/C2019C00097/Html/Text,http://
www.legislation.gov.au/Details/C2019C00097.
9. NSW government department of primary industries. Local Land Services.
Available at: https://www.lls.nsw.gov.au/. Retrieved 30 August 2019.
10. One Welfare. Veterinary Oaths. Available at: http://onewelfare.cve.edu.au/
veterinary-oaths. Retrieved 3 September 2019.
11. McNeill PM, Dowton SB Declarations made by graduating medical students
in Australia and New Zealand. Med J Aust 2002;176:123125.
12. Broder C, Weir D, Reid P. Hendra virus and Nipah virus animal vaccines.
Vaccine 2016;34:35253534.
13. Bull E Reasons for moving from equine practice in south East Queensland
to Alice Springs northern territory. Pers Commun. 2017.
14. Mendez DH, Judd J, Speare R Unexpected result of Hendra virus outbreaks
for veterinarians, Queensland, Australia. Emerg Infect Dis 2012;18:8385.
15. Australian Veterinary Association Ltd. Submission No. 186 to the Agriculture
and Environment Committee, Queensland Parliament Hendra virus EquiVac®
vaccine and its use by veterinary surgeons in Queensland. Queensland
Australian Veterinary Journal © 2020 Australian Veterinary Association
6
EQUINE
EQUINE
Government, 2016. Available at: https://www.parliament.qld.gov.au/
documents/committees/AEC/2016/rpt24-09-HendraVirusVacc/submissions/
186.pdf.
16. Queensland Parliament Agriculture and Environment Committee Inquiry.
Hendra virus EquiVac®vaccine and its use by veterinary surgeons in Queens-
land. Queensland Government, 2016. Available at: https://cabinet.qld.gov.au/
documents/2017/Apr/Hendra/Attachments/Report.PDF.
17. Halliday J, Daborn C, Auty H et al. Bringing together emerging and endemic
zoonoses surveillance: Shared challenges and a common solution. Philos Trans
R Soc B 2012;367:28722880.
18. Thornton M, Mor S, Eastwood K et al. How does a vet nd a new disease
that no one has seen before? Control Therapy Ser. 2019:294:56.
19. National Research Council (US) Committee on Achieving Sustainable Global
Capacity for Surveillance and Response to Emerging Diseases of Zoonotic Ori-
gin. In: Keusch GT, Pappaioanou M, Gonzalez MC, et al., editors. Sustaining
global surveillance and response to emerging zoonotic diseases. National Acade-
mies Press (US), Washington (DC), 2009. http://www.ncbi.nlm.nih.gov/books/
NBK215317/.
20. One Health Surveillance in Denmark. Available at: https://icahs4.org/
general-information/one-health-surveillance-in-denmark/. Retrieved 26
August 2019.
21. The Senate of the United States. 1903: Advancing Emergency Preparedness
Through One Health Act of 2019 (Introduced version). 2019. Available at: https://
www.govtrack.us/congress/bills/116/s1903/text.
22. Queensland Government Hendra Virus Interagency Technical Working
Group. Hendra virus infection prevention advice 2014. Brisbane, Queensland:
Queensland Government. Available at: https://www.health.qld.gov.au/__data/
assets/pdf_le/0026/428624/hev-inf-prev-adv.pdf.
23. FAO, WHO, OIE. Taking a multisectoral, One Health Approach: A Tripartite
Guide to Addressing Zoonotic Diseases in Countries. 2019. Available at: https://
www.oie.int/leadmin/Home/eng/Media_Center/docs/EN_
TripartiteZoonosesGuide_webversion.pdf.
24. Street J, Duszynski K, Krawczyk S et al. The use of citizensjuries in health
policy decision-making: A systematic review. Soc Sci Med 2014;109:19.
25. Degeling C, Rychetnik L, Street J et al. Inuencing health policy through
public deliberation: Lessons learned from two decades of citizens/community
juries. Soc Sci Med 2017;179:166171.
26. Blacksher E, Diebel A, Forest P-G et al. What is public deliberation? Hastings
Center Rep 2012;42:1417.
27. Degeling C, Johnson J, Iredell J et al. Assessing the public acceptability of
proposed policy interventions to reduce the misuse of antibiotics in Australia:
A report on two community juries. 2017; Available at: https://ses.library.usyd.
edu.au/handle/2123/16920.
28. Braunack-Mayer AJ, Street JM, Rogers WA et al. Including the public in pan-
demic planning: A deliberative approach. BMC Public Health 2010;10:501.
29. Department of Agriculture, Water and the Environment. Monitoring Flying-
Fox Populations. Department of Agriculture, water and the environment. Avail-
able at: http://www.environment.gov.au/. Retrieved 13 March 2020.
30. NSW DPI. Hendra case conrmed in upper Hunter Valley. 2019. Orange, New
South Wales: Department of Primary Industries. Available at: https://www.dpi.
nsw.gov.au/about-us/media-centre/releases/2019/hendra-case-conrmed-in-
upper-hunter-valley. Retrieved 13 March 2020.
31. Field H, Jordan D, Edson D et al. Spatiotemporal aspects of Hendra virus
infection in Pteropid bats (ying-foxes) in eastern Australia. PLoS One 2015;10.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4666458/.
32. Martin G, Yanez-Arenas C, Chen C et al. Climate change could increase the
geographic extent of Hendra virus spillover risk. EcoHealth 2018;15:509525.
33. Roberts BJ, Catterall CP, Eby P et al. Latitudinal range shifts in Australian y-
ing-foxes: A re-evaluation. Aust Ecol 2012;37:1222.
34. Community Perspectives on Ecological Approaches to Bat-borne Infectious
Risks. One Health ethics 2018. Available at: https://onehealthethics.org/
community-perspectives-on-ecological-approaches-to-bat-borne-infectious-
risks/.
35. Thomas R, Sims R, Degeling C et al. CJCheck stage 1: Development and test-
ing of a checklist for reporting community juries Delphi process and analysis of
studies published in 19962015. 2016. Sydney, Australia: Sydney Health Ethics,
The University of Sydney. Available at: https://ses.library.usyd.edu.au/handle/
2123/15758.
36. Degeling C, Gilbert GL, Annand E et al. Managing the risk of Hendra virus
spillover in Australia using ecological approaches: A report on three commu-
nity juries. PLOS One 2018;13:e0209798.
37. Smith C. An investigation into the impact of current Hendra virus policies
on the welfare of horses and equine practice in Queensland. In Proceedings of
the Bain Fallon Memorial Lectures, Gold Coast 2017. Equine Veterinarians Aus-
tralia, Gold Coast, 2017: 18. Available at: http://www.sciquest.org.nz/node/
135868.
38. Degeling C, Johnson J, Ward M et al. A Delphi survey and analysis of expert
perspectives on one health in Australia. EcoHealth 2017;14:783792.
39. Adamson S, Marich A, Roth I One health in NSW: Coordination of human
and animal health sector management of zoonoses of public health signi-
cance. NSW Public Health Bull 2011;22:105.
40. Chan J, Doyle B, Branley J et al. An outbreak of psittacosis at a veterinary
school demonstrating a novel source of infection. One Health 2017;3:2933.
41. Malo JA, Colbran C, Young M et al. An outbreak of Q fever associated with
parturient cat exposure at an animal refuge and veterinary clinic in Southeast
Queensland. Aust New Z J Public Health 2018;42:451455.
42. Annand EA, Reid PA Clinical review of two fatal equine cases of infection
with the insectivorous bat strain of Australian bat lyssavirus. Aust Vet J 2014;92:
324332.
43. Animal Health Australia. National Signicant Disease Investigation Program
Animal Health Australia. National Signicant Disease Investigation Program.
Available at: https://www.animalhealthaustralia.com.au/what-we-do/disease-
surveillance/national-signicant-disease-investigation-program/.
44. Australian Government The Department of Agriculture and Water
Resources. National Animal Health Surveillance and Diagnostics Business Plan
20162019. Version 2. 2018: 26.
45. Texas Department of State Health Services. Infectious Disease Control Unit
(IDCU) Overview. Available at: https://dshs.texas.gov/idcu/about/overview.aspx.
Retrieved 31 August 2019.
46. Ward MP, Scheurmann JA The relationship between equine and human
West Nile virus disease occurrence. Sci Direct 2008;129:378383.
Supporting information
Additional Supporting Information may be found in the online ver-
sion of this article at the publishers web-site: http://onlinelibrary.
wiley.com/doi/10.1111/avj.12957/suppinfo.
Table S1. Comments and statements made by jurors during their
deliberations
(Accepted for publication 17 April 2020)
© 2020 Australian Veterinary Association Australian Veterinary Journal 7
EQUINE
EQUINE
... Their grazing behavior, large respiratory tidal volume, and extensive highly vascularized upper respiratory epithelium may contribute to their vulnerability for HeV spillover (23). Detecting spillover to horses relies on attending veterinarians recognizing clinical manifestations consistent with HeV disease, sampling appropriately, and submitting samples for priority state laboratory testing (24). Passive surveillance using suspected disease testing is affected by a strong regional bias for areas where HeV has previously been detected and where domestic horse populations overlap with BFF distribution ranges, from eastern coastal Queensland to northern New South Wales (25). ...
... Clearly, biosecurity practices should be updated to acknowledge spillover risk in all regions frequented by any species of flying fox. Passive disease surveillance and biosecurity risk management for emerging diseases relies on recognition of suspected disease cases by clinical veterinarians, who play crucial roles relevant to animal and human health (24). Sporadic incidence of HeV and rare occurrence of Australian bat lyssavirus, yet high zoonotic consequence of both and lack of pathognomonic disease signs, inherently challenge surveillance of horses in Australia for these viruses. ...
... Critical and timely human postexposure management relies on confirmed animal-case diagnosis yet missed cases are inevitable, resulting in unmanaged risk of fatal zoonotic disease. Veterinarians are challenged in performing disease recognition by simultaneous obligations to serve both animals and animal owners, manage biosecurity risks, and meet Workplace Health and Safety Act and Biosecurity Act requirements (24,49,50). Veterinary description of disease manifestations most consistent with HeV led us to prioritize this case in our research testing pathway. ...
... Their grazing behavior, large respiratory tidal volume, and extensive highly vascularized upper respiratory epithelium may contribute to their vulnerability for HeV spillover (23). Detecting spillover to horses relies on attending veterinarians recognizing clinical manifestations consistent with HeV disease, sampling appropriately, and submitting samples for priority state laboratory testing (24). Passive surveillance using suspected disease testing is affected by a strong regional bias for areas where HeV has previously been detected and where domestic horse populations overlap with BFF distribution ranges, from eastern coastal Queensland to northern New South Wales (25). ...
... Clearly, biosecurity practices should be updated to acknowledge spillover risk in all regions frequented by any species of flying fox. Passive disease surveillance and biosecurity risk management for emerging diseases relies on recognition of suspected disease cases by clinical veterinarians, who play crucial roles relevant to animal and human health (24). Sporadic incidence of HeV and rare occurrence of Australian bat lyssavirus, yet high zoonotic consequence of both and lack of pathognomonic disease signs, inherently challenge surveillance of horses in Australia for these viruses. ...
... Critical and timely human postexposure management relies on confirmed animal-case diagnosis yet missed cases are inevitable, resulting in unmanaged risk of fatal zoonotic disease. Veterinarians are challenged in performing disease recognition by simultaneous obligations to serve both animals and animal owners, manage biosecurity risks, and meet Workplace Health and Safety Act and Biosecurity Act requirements (24,49,50). Veterinary description of disease manifestations most consistent with HeV led us to prioritize this case in our research testing pathway. ...
Article
Full-text available
We identified and isolated a novel Hendra virus (HeV) variant not detected by routine testing from a horse in Queensland, Australia, that died from acute illness with signs consistent with HeV infection. Using whole-genome sequencing and phylogenetic analysis, we determined the variant had ≈83% nt identity with prototypic HeV. In silico and in vitro comparisons of the receptor-binding protein with prototypic HeV support that the human monoclonal antibody m102.4 used for postexposure prophylaxis and current equine vaccine will be effective against this variant. An updated quantitative PCR developed for routine surveillance resulted in subsequent case detection. Genetic sequence consistency with virus detected in grey-headed flying foxes suggests the variant circulates at least among this species. Studies are needed to determine infection kinetics, pathogenicity, reservoir-species associations, viral-host coevolution, and spillover dynamics for this virus. Surveillance and biosecurity practices should be updated to acknowledge HeV spillover risk across all regions frequented by flying foxes.
... Difficulties in accessing external technical support were seen as a constraint to investigation of atypical disease events. Comments provided by some respondents were reflective of previous experi- Annand et al., 2020). The lack of structured assistance available to small animal practitioners-in particular access to free or subsidized pathology testing through government laboratories-has real potential to heighten vulnerability to an emerging disease outbreak. ...
... This often related to concerns about the possible risk of infection to themselves and others, along with unfamiliarity with appropriate procedures and support available from government veterinarians. Such concerns could be driven by experiences with Hendra virus, which resulted in veterinarians leaving equine practice due to personal health concerns, as well as work health and safety responsibilities and threat of litigation when managing potential and confirmed Hendra virus cases in horses (Annand et al., 2020;Mendez et al., 2017). These findings need to be considered in light of a recent study showing a high prevalence of imposter syndrome, the tendency to doubt one's abilities despite positive evidence to the contrary, amongst veterinarians (Kogan et al., 2020). ...
Article
Full-text available
Frontline health practitioners need to be adequately prepared to recognize and respond to atypical disease presentations, some of which may have zoonotic potential. Data from previous research have suggested that veterinarians may face challenges in investigation of disease events due to time and money constraints. As part of an Australia-wide survey project, veterinarians were asked to answer an open-ended question regarding potential constraints in investigation of a typical disease events where there may be concern about a zoonosis or emerging infectious disease. Qualitative data were analysed using thematic content analysis with the consideration of the respondent's area of practice and level of experience. Five main themes were identified which encapsulated constraints to disease investigation described by participants, namely: (a) financing of disease investigations, including client willingness/ability to pay in absence of alternative government schemes; (b) client-related factors, including willingness to consent to investigation and comply with instructions; (c) professional preparedness to act, related to practitioner knowledge and technical competency; (d) workplace environment, impacted by physical, logistical and managerial aspects of workplaces; and (e) access to external technical support, primarily from government veterinary services. Successful investigation and management of atypical diseases, including potential zoonoses, requires preparedness of all veterinarians. Continuing professional education for veterinarians in infection prevention and control and biosecurity, alongside adequate government funding and support will help facilitate optimal health and biosecurity outcomes. Both state and federal governments need to review existing animal health structures to ensure cohesive responses for future disease events.
... Citizen juries have been used to elicit the views of well-informed people on various control measures for reducing the risks associated with HeV infection. 15,16 Three juries reported that, although ecological strategies should be included in HeV risk management strategies, currently recommended interventions, including vaccination and changing horse husbandry practices, must remain a high priority. 16 Jurors acknowledged that HeV management posed an important challenge for private veterinarians, but the majority of jurors believed that veterinarians should not be obliged to attend unvaccinated horses. ...
... 16 Jurors acknowledged that HeV management posed an important challenge for private veterinarians, but the majority of jurors believed that veterinarians should not be obliged to attend unvaccinated horses. 15 One of the major difficulties facing vets is that the communication of the risks associated with HeV infection and the consequences of not vaccinating horses against this virus needs to be carried out in advance of the horse becoming sick. Although many vets have ready access to information for clients, and the majority inform clients about HeV-related risks when a horse appears sick, 17 by the time a vet is called to attend a sick horse, it is too late to discuss whether the horse should be vaccinated against Hendra. ...
Chapter
Animals are closely intertwined with the history and contemporary application of vaccination. The growing global attention towards zoonoses, increasing institutionalisation of One Health principles in public health and the social scientific attentiveness to non-human animals following the ‘animal turn’ make this an opportune moment to examine the deep social relationship between animals and vaccines. This chapter grapples with four areas of this relationship: the role of animals in the history of vaccine development, the professionalisation of veterinary medicine, the use and critique of vaccination as a ‘One Health’ intervention and finally the collision of societal opinion and scientific practice in animal research. Through these areas of focus we illustrate that animals have not been passive participants in the history or application of vaccination, repeatedly challenging and changing the technical and societal playing field for vaccination interventions and posing new ethical questions in an increasingly interconnected and environmentally-challenged world.
Article
Full-text available
Background Hendra virus (HeV) infection is endemic in Australian flying-fox populations. Habitat loss has increased the peri-urban presence of flying-foxes, increasing the risk of contact and therefore viral ‘spillovers’ into horse and human populations. An equine vaccine is available and horse-husbandry practices that minimize HeV exposure are encouraged, but their adoption is suboptimal. Ecological approaches–such as habitat creation and conservation–could complement vaccination and behavioural strategies by reducing spillover risks, but these are controversial. Methods We convened three community juries (two regional; one metropolitan) to elicit the views of well-informed citizens on the acceptability of adding ecological approaches to current interventions for HeV risk. Thirty-one participants of diverse backgrounds, mixed genders and ages were recruited using random-digit-dialling. Each jury was presented with balanced factual evidence, given time to ask questions of expert presenters and, after deliberation, come to well-reasoned conclusions. Results All juries voted unanimously that ecological strategies should be included in HeV risk management strategies but concluded that current interventions–including vaccination and changing horse-husbandry practices–must remain the priority. The key reasons given for adopting ecological approaches were: (i) they address underlying drivers of disease emergence, (ii) the potential to prevent spillover of other bat-borne pathogens, and (iii) there would be broader community benefits. Juries differed regarding the best mechanism to create/conserve flying-fox habitat: participants in regional centres favoured direct government action, whereas the metropolitan jury preferred to place the burden on landholders. Conclusions Informed citizens acknowledge the value of addressing the drivers of bat-borne infectious risks but differ substantially as to the best implementation strategies. Ecological approaches to securing bat habitat could find broad social support in Australia, but disagreement about how best to achieve them indicates the need for negotiation with affected communities to co-develop fair, effective and locally appropriate policies.
Article
Full-text available
Objective: To determine the source of a Q fever outbreak in humans at an animal refuge and veterinary clinic in southeast Queensland from October to December 2016. Methods: Case interviews and a retrospective cohort study of animal refuge and veterinary clinic staff using a self‐administered questionnaire related to clinical history of Q fever, Q fever vaccination status and workplace activities during the exposure period. Results: Seven cases (six confirmed, one probable) were identified. Forty‐three questionnaires were completed (92% response rate). Workplace activities associated with the greatest risk of illness were the disposal of deceased cats or dogs (RR, 14.0; 95%CI, 1.9–104.1) and participating in euthanasia of cats or dogs (RR, 4.6; 95%CI, 1.3–16.9). Five feline birthing events occurred at the animal refuge from 25 September to 19 October 2016, each with subsequent euthanasia of the queen cat and litter. All cases had likely exposure to a specific queen cat and her litter that were euthanised the same day as the birthing event. Conclusions: A parturient cat was the most likely source of the outbreak. Implications for public health: Occupational groups and others with regular exposure to feline or canine parturient products should receive Q fever vaccine.
Article
Full-text available
Disease risk mapping is important for predicting and mitigating impacts of bat-borne viruses, including Hendra virus (Paramyxoviridae:Henipavirus), that can spillover to domestic animals and thence to humans. We produced two models to estimate areas at potential risk of HeV spillover explained by the climatic suitability for its flying fox reservoir hosts, Pteropus alecto and P. conspicillatus. We included additional climatic variables that might affect spillover risk through other biological processes (such as bat or horse behaviour, plant phenology and bat foraging habitat). Models were fit with a Poisson point process model and a log-Gaussian Cox process. In response to climate change, risk expanded southwards due to an expansion of P. alecto suitable habitat, which increased the number of horses at risk by 175–260% (110,000–165,000). In the northern limits of the current distribution, spillover risk was highly uncertain because of model extrapolation to novel climatic conditions. The extent of areas at risk of spillover from P. conspicillatus was predicted shrink. Due to a likely expansion of P. alecto into these areas, it could replace P. conspicillatus as the main HeV reservoir. We recommend: (1) HeV monitoring in bats, (2) enhancing HeV prevention in horses in areas predicted to be at risk, (3) investigate and develop mitigation strategies for areas that could experience reservoir host replacements. Electronic supplementary material The online version of this article (10.1007/s10393-018-1322-9) contains supplementary material, which is available to authorized users.
Article
Full-text available
Objective: To elicit the views of well-informed community members on the acceptability of proposed policy interventions designed to improve community use of antibiotics in Australia. Design: Two community juries held in 2016. Setting and participants: Western Sydney and Dubbo communities in NSW, Australia. Twenty-nine participants of diverse social and cultural backgrounds, mixed genders and ages recruited via public advertising: one jury was drawn from a large metropolitan setting; the other from a regional/rural setting. Main outcome measure: Jury verdict and rationale in response to a prioritization task and structured questions. Results: Both juries concluded that potential policy interventions to curb antibiotic misuse in the community should be directed towards: (i) ensuring that the public and prescribers were better educated about the dangers of antibiotic resistance; (ii) making community-based human and animal health-care practitioners accountable for their prescribing decisions. Patient-centred approaches such as delayed prescribing were seen as less acceptable than prescriber-centred approaches; both juries completely rejected any proposal to decrease consumer demand by increasing antibiotic prices. Conclusion: These informed citizens acknowledged the importance of raising public awareness of the risks, impacts and costs of antibiotic resistance and placed a high priority on increasing social and professional accountability through restrictive measures. Their overarching aim was that policy interventions should be directed towards creating collective actions and broad social support for changing antibiotic use through establishing and explaining the need for mechanisms to control and support better prescribing by practitioners, while not transferring the burdens, costs and risks of interventions to consumers.
Article
Full-text available
Hendra virus is a zoonotic paramyxovirus, which causes severe respiratory and neurological disease in horses and humans. Since 2012, the Hendra virus sub-unit G vaccine has been available for horse vaccination in Australia. Uptake of the vaccine has been limited and spillover events of Hendra virus infection in horses continue to occur. We conducted an online, questionnaire-based cross-sectional study of 376 horse owners belonging to a variety of different equestrian clubs in Queensland, Australia, to identify risk factors for non-vaccination against Hendra virus. A total of 43.1% (N = 162) of horse owners indicated that they currently did not vaccinate against Hendra virus infection, while 56.9% (N = 214) currently vaccinated against Hendra virus infection. A total of 52 risk factors were evaluated relating to equestrian activities, horse management, perceived risk and severity of horse and human infection with Hendra virus, side effects of Hendra vaccination, other vaccinations conducted by horse owners and horse owners’ attitudes towards veterinarians. The final multivariable logistics regression model identified the following risk factors associated with increased odds of non-vaccination against Hendra virus: 1) perceived low risk (compared to high) of Hendra virus infection to horses (considering the horse owners’ location and management practices) or horse owners were unsure about the risk of infection, 2) perceived moderate severity (compared to very severe or severe) of Hendra virus infection in humans, 3) horse owners non-vaccination of their pets, 4) horse owners non-vaccination against strangles disease in horses, 5) handling of more than three horses per week (compared to one horse only) and 6) perceived attitude that veterinarians had a high motivation of making money from Hendra virus vaccination (compared to veterinarians having a low motivation of making money from Hendra virus vaccination). Horse owners were more likely to vaccinate against Hendra virus if horses were used for dressage, show jumping or eventing. The study also identified horse owners’ concerns about side-effects and about the lack of evidence on vaccine efficacy. © 2017 Goyen et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Article
Full-text available
Background Hendra virus is a paramyxovirus that causes periodic serious disease and fatalities in horses and humans in Australia first identified in 1994. Pteropid bats (commonly known as flying-foxes) are the natural host of the virus, and the putative route of infection in horses is by ingestion or inhalation of material contaminated by flying-fox urine or other bodily fluids. Humans become infected after close contact with infected horses. Horse owners in Australia are encouraged to vaccinate their horses against Hendra virus to reduce the risk of Hendra virus infection, and to prevent potential transmission to humans. After the vaccine was released in 2012, uptake by horse owners was slow, with some estimated 11-17% of horses in Australia vaccinated. This study was commissioned to examine barriers to vaccine uptake and potential drivers to future adoption of vaccination by horse owners. Methods This study examined qualitative comments from respondents to an on-line survey, reporting reasons for not vaccinating their horses. The study also investigated scenarios in which respondents felt they might consider vaccinating their horses. ResultsSelf-reported barriers to uptake of the Hendra virus vaccine by horse owners (N = 150) included concerns about vaccine safety, cost, and effectiveness. Reduction in vaccination costs and perception of immediacy of Hendra virus risk were reported as being likely to change future behaviour. However, the data also indicated that horse owners generally would not reconsider vaccinating their horses if advised by their veterinarian. Conclusion While changes to vaccine costs and the availability data supporting vaccine safety and efficacy may encourage more horse owners to vaccinate, this study highlights the importance of protecting the relationship between veterinarians and horse owners within the risk management strategies around Hendra virus. Interactions and trust between veterinarians and animal owners has important implications for management of and communication around Hendra virus and other zoonotic disease outbreaks.
Article
Full-text available
In November 2014, New South Wales Health was notified of a cluster of respiratory illness in a veterinary school. Active case finding identified another case at a local equine stud. All cases had exposure to the equine fetal membranes of Mare A. This tissue subsequently tested positive for Chlamydia psittaci using quantitative real-time polymerase chain reaction. We conducted a cohort study of the university and stud farm staff to determine risk factors for disease. Nine people were exposed to the fetal membranes of Mare A. Of these, five cases of psittacosis were identified. Two required hospital admission. Contact with birds was not associated with illness (RR = 0.5, 95% CI = 0.09–2.73). People who had direct contact with the abnormal fetal membranes were more likely to develop disease (RR = 11.77, 95% CI = 1.02–∞). The emergence of an association between horse exposure and C. psittaci infection has important implications for the prevention and control of psittacosis. Article summary line: Investigation of an outbreak of psittacosis in a rural veterinary school demonstrates novel source of infection for psittacosis through exposure to abnormal equine fetal membranes.
Article
One Health (OH) is an interdisciplinary approach aiming to achieve optimal health for humans, animals and their environments. Case reports and systematic reviews of success are emerging; however, discussion of barriers and enablers of cross-sectoral collaboration are rare. A four-phase mixed-method Delphi survey of Australian human and animal health practitioners and policymakers (n = 52) explored areas of consensus and disagreement over: (1) the operational definition of OH; (2) potential for cross-sectoral collaboration; and (3) key priorities for shaping the development of an OH response to significantly elevated zoonotic disease risk. Participants agreed OH is essential for effective infectious disease prevention and control, and on key priorities for outbreak responses, but disagreed over definitions and the relative priority of animal health and welfare and economic considerations. Strong support emerged among Australian experts for an OH approach. There was also recognition of the need to ensure cross-sectoral differences are addressed.
Article
Citizens’/community juries [CJs] engage members of the public in policy decision-making processes. CJs can be employed to develop policy responses to health problems that require the consideration of both community values and scientific evidence. Based on the principles of deliberative democracy, recent reviews indicate that findings from CJs have successfully been used to influence health policy decision-making. Despite this evidence of success, there appears to be a gap between the goals of health researchers who organize CJs and the needs of policy actors and decision makers. Drawing on our experiences working with CJs and recent research on CJ methods, we describe a synopsis of the current state of the art organized around four key questions, and informed by insights from deliberative theory and critical policy studies. Our intention is to stimulate further discussion as to the types of health policy questions that can be usefully addressed through public deliberation, and provide guidance on the methodological and political dimensions that need to be considered in deciding whether a CJ is an appropriate approach for informing a policy decision-making process.