As the nation experiences what many experts believe is the second-largest wave of COVID infections since the pandemic started, many Americans will be checking to make sure they don’t have the ...

As flu cases rise across the country, here is everything to know about testing yourself for the illness at home.

For travelers, a recent negative Covid-19 test can be a golden admission ticket to many U.S. and international destinations without having to quarantine for two weeks. But how easy is it to fake a ...

Rampant community transmission of the coronavirus and a crippled vaccine rollout have boxed people into a corner: Many are relying on negative test results, inherently limited in usefulness, as a ...