COVID-19 Testing: PCR, Antigen, & Serology

test. A positive antigen test means that the person being tested has the virus that causes COVID-19. People who first test positive should isolate for a minimum of 10 days after symptoms begin, be afebrile (with no fever) for at least 24 hours and have symptoms improving. People with no symptoms should isolate for 10 days after the date of ... ................
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