2) ...sampled the air and surfaces in hospitals and homes for the presence of SARS-CoV-2.
The studies were conducted between 2020 and 2022 around the world.
Results show that residences had higher virus concentrations and more frequently detected the virus compared to hospitals.
3) Factors like air changes per hour (ACH), which represents ventilation, likely contribute to this difference. Hospitals are required to meet minimum ACH standards, while most buildings do not.
4) Within settings, primary rooms where patients spent most time had higher concentrations than secondary rooms visited less. However, virus detection was similarly likely in residential primary rooms. In hospitals, secondary areas like corridors less commonly tested positive.
5) When grouped by ACH, virus concentrations and detection rates generally decreased as ACH increased from 0-12 changes per hour, Above 12, the trends were less clear possibly due to limited data.
6) In conclusion, this analysis of diverse field studies provides evidence that increased ventilation through higher ACH can help reduce potential exposure to airborne SARS-CoV-2.
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