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PHO Rounds: Coronavirus in the Urban Built Environment (CUBE)
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PHO Rounds: CUBE: Evaluating the use of Environmental Swabs for the Detection and Surveillance of SARS-CoV-2 in School and Congregate Settings
Monitoring the burden of SARS-CoV-2 in our communities in the absence of personal testing remains challenging. Environmental sampling of the built environment can rapidly identify where SARS-CoV-2 is present, direct recommendations on individual risk and screening, and track prevalence of SARS-CoV-2 variants over time. Floors act as surfaces that collect virus shed through respiratory droplets and aerosols, and thus represent a useful substrate to sample for the presence of infected individuals. Built environment sampling provides more spatially refined detection and expanded geographic range, complementing wastewater sampling.
This session will show that SARS-CoV-2 detection prevalence mirrored disease activity across hospital and university campuses. In long-term care homes, swabs positive for SARS-CoV-2 occurred 3-fold more often during outbreak compared to non-outbreak periods.
By the end of this session, participants will be able to:
1. Understand the current evidence around environmental surveillance for the detection of SARS-CoV-2 and variants.
2. Recognize important differences between wastewater and built environmental sampling as surveillance indicators.
3. Review findings of built environmental screening studies in hospital, university, long-term care and school settings.
4. Discuss implications of these findings for public health responses during the pandemic.
Presenters: Dr. Caroline Nott and Dr. Michael Fralick
Monitoring the burden of SARS-CoV-2 in our communities in the absence of personal testing remains challenging. Environmental sampling of the built environment can rapidly identify where SARS-CoV-2 is present, direct recommendations on individual risk and screening, and track prevalence of SARS-CoV-2 variants over time. Floors act as surfaces that collect virus shed through respiratory droplets and aerosols, and thus represent a useful substrate to sample for the presence of infected individuals. Built environment sampling provides more spatially refined detection and expanded geographic range, complementing wastewater sampling.
This session will show that SARS-CoV-2 detection prevalence mirrored disease activity across hospital and university campuses. In long-term care homes, swabs positive for SARS-CoV-2 occurred 3-fold more often during outbreak compared to non-outbreak periods.
By the end of this session, participants will be able to:
1. Understand the current evidence around environmental surveillance for the detection of SARS-CoV-2 and variants.
2. Recognize important differences between wastewater and built environmental sampling as surveillance indicators.
3. Review findings of built environmental screening studies in hospital, university, long-term care and school settings.
4. Discuss implications of these findings for public health responses during the pandemic.
Presenters: Dr. Caroline Nott and Dr. Michael Fralick