Here's what to know about the latest COVID strain - and how to tell if your at-home test is still good to use.

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You can exhibit COVID-19 symptoms yet test negative due to early infection, low viral load, or immune response. PCR testing ...

Both COVID cases and hospitalizations have climbed in recent weeks, leading to heightened concerns ahead of the usual cold and flu season. But this time around, the director of the Center's for ...

BALTIMORE (WBFF) — A patient continued to test positive for the Coronavirus despite no longer being infested. Now new research is shining light on the reliability of Covid PCR Testing. Dr. KC Coffey, ...

A common nasal spray may lower the risk of getting Covid-19, a new study shows. Dr. Leana Wen discusses what this all means as coronavirus cases rise.

NEWARK, Calif. (KGO) -- Desperate attempts Sunday night to try to get PCR COVID tests as the holiday weekend wraps up, there are reports of seven-hour long lines in the East Bay city of Newark. This ...

With flu and RSV seasons set to soon heighten, when should you test for COVID if you are sick and how often? The federal government recently resumed its program of shipping out free COVID tests to ...

COVID cases are starting to creep up again in the U.S., and it’s understandable to have new questions about the virus and the newest CDC guidance on isolation after a positive test. After all, it’s ...