Figure
Identification of province and territories that are short of samples by healthcare visits population a,b
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Background:
To maintain control of the coronavirus disease 2019 (COVID-19) epidemic as lockdowns are lifted, it will be crucial to enhance alternative public health measures. For surveillance, it will be necessary to detect a high proportion of any new cases quickly so that they can be isolated, and people who have been exposed to them traced and...
Context in source publication
Context 1
... is inherent with the calculation, P/T with higher populations will have a higher number of expected healthcare visits, E. Given the high weight of contribution from this population to detect COVID-19 at p 0 , larger populations will require fewer additional, if any, samples for early detection. If the goal is to detect COVID-19 at p 0 at the P/T level during the time frame of interest t, then only British Columbia, Alberta, Ontario and Québec would have a sufficient number of healthcare visit samples ( Table 3). This assumes visits for respiratory illness at the assumed prevalence levels when maximal public health measures were in place from mid-March until just before the period of their relaxation in May 2020. ...Similar publications
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Citations
... Since 2020, the coronavirus disease (COVID-19) pandemic has affected many people all over the world [1]. Disease clusters, which are small-scale groups of infected persons, are meaningful with respect to investigations into the trends of COVID-19 infections [2]. Various sources of such infections have been reported, such as nursing homes [3], medical hospitals [4,5], families [6], schools [7], and restaurants [8]. ...
The coronavirus disease pandemic has afforded dental professionals an opportunity to reconsider infection control during treatment. We investigated the efficacy of combining extraoral high-volume evacuators (eHVEs) with preprocedural mouth rinsing in reducing aerosol contamination by ultrasonic scalers. A double-masked, two-group, crossover randomized clinical trial was conducted over eight weeks. A total of 10 healthy subjects were divided into two groups; they received 0.5% povidone-iodine (PI), essential oil (EO), or water as preprocedural rinse. Aerosols produced during ultrasonic scaling were collected from the chest area (PC), dentist’s mask, dentist’s chest area (DC), bracket table, and assistant’s area. Bacterial contamination was assessed using colony counting and adenosine triphosphate assays. With the eHVE 10 cm away from the mouth, bacterial contamination by aerosols was negligible. With the eHVE 20 cm away, more dental aerosols containing bacteria were detected at the DC and PC. Mouth rinsing decreased viable bacterial count by 31–38% (PI) and 22–33% (EO), compared with no rinsing. The eHVE prevents bacterial contamination when close to the patient’s mouth. Preprocedural mouth rinsing can reduce bacterial contamination where the eHVE is positioned away from the mouth, depending on the procedure. Combining an eHVE with preprocedural mouth rinsing can reduce bacterial contamination in dental offices.
