As Omicron spreads, some experts are calling for a switch to saliva-based tests, which may detect infections days earlier than nasal swabs do.As Omicron spreads, some experts are calling for a switch to saliva-based tests, which may detect infections days earlier than nasal swabs do.your-feed-science, your-feed-health, Tests (Medical), Coronavirus Omicron Variant, Coronavirus Delta Variant, Coronavirus (2019-nCoV), Nose, Throat, Biology and Biochemistry, Great Britain, United StatesRead More
