COVID-19: Rapid nose swab test may not detect Omicron quickly enough
A recent study showed PCR tests of saliva detected the virus on average three days before the rapid nose-swab samples became positive.
Magen David worker take a COVID-19 rapid antigen test from Israelis in need of green pass authorization, at a Magen David Adom testing center in Jerusalem, on December 22, 2021.(photo credit: OLIVIER FITOUSSI/FLASH90)ByREUTERSUpdated:
