There's still a lot of confusion around the best time to take a COVID test and where to get them. Here, experts share their ...

During the COVID-19 health emergency, two strategies for detecting coronavirus infections were commonly adopted around the world. Part of Nature Outlook: Medical diagnostics Initially, in countries ...

So when and how should you use them? By Dani Blum Yet again this winter, millions of Americans will wonder if a nagging cough or body aches is a sign they’re coming down with Covid or the flu. This ...

While COVID-19 never fully went away the way many of us hoped it would when we were embracing Zoom happy hours and worked from home in March of 2020, ramped-up testing efforts have made it easier to ...

A group of actors dance in a ring of ultraviolet light projected onto a square in Rotterdam from a glowing black orb ...

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 ...