There are three broad categories of coronavirus tests in the U.S. Two diagnose whether you have an active infection, and a third indicates if you previously had the virus. Most tests look for bits of ...

Though they’re not perfect, at-home tests will detect infections about 80% of the time, according to the U.S. Food and Drug Administration. So is there any reason to get a PCR test anymore? Judging by ...

COVID-19 cases remained relatively steady week-over-week in late August, though data from states showed "very high" viral activity at the end of the month, according to the Centers for Disease Control ...