One home swab now tells a household which of four winter respiratory viruses is present. But it can miss real infections that a lab PCR would catch ...

Testing yourself for coronavirus infection can be more convenient than getting a clinic or lab test, but from a public health standpoint, experts say there's at least one key downside. Only 7% of ...

Update: This program has ended and free tests are not current available from the government website. As cases of a new COVID-19 variant tick upward across the U.S., the federal government is again ...