Add Yahoo as a preferred source to see more of our stories on Google. As the federal health emergency ended May 11 and COVID numbers are on the rise, here's how you can still access tests, at-home and ...

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Hours-long lines for coronavirus PCR tests are prompting public officials to push the masses to use rapid, at-home antigen tests instead, but public health experts warn the 15-minute tests are ...

Since the emergence of COVID-19 in late 2019, the gold standard in testing for the disease has been a nuclear-derived technique: real-time reverse transcription–polymerase chain reaction, or real-time ...