The image of the real SAR-CoV-2 virus, which causes COVID-19, has become ubiquitous. But creating a fake one could be a crucial part of fighting the pandemic. Credit: Shutterstock / CKA When Dr. Soo ...
As Omicron spreads, some experts are calling for a switch to saliva-based tests, which may detect infections days earlier than nasal swabs do. By Emily Anthes Jan. 20, 2022: This article was updated ...
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