Click the video above to watch the full interview. How to tell if you have the flu, COVID-19 or RSV Walker said telling the three illnesses apart is the hard part.

Only a real doctor using real U.S. Food and Drug Administration (FDA)-approved testing can tell for sure if you have COVID-19. You can see how recognizing COVID-19 can be very difficult without ...

At-home COVID-19 rapid test kits are flying off the shelves, and appointments for PCR tests are hard to come by in many parts of the country. With the omicron variant now accounting for a majority ...

Getting tested for coronavirus won’t tell you whether or not you have the new omicron variant. The process to determine the variant, experts say, is more complicated than that.

If you don't feel well, you may worry that you have COVID-19. The only way to know for sure is to take a test. At-home tests can tell whether you have the virus right now.

COVID-19 infections from variant strains are quickly spreading across the U.S., but there’s one big problem: Lab officials say they can’t tell patients or their doctors whether someone has ...

If you’re fully vaccinated, it’s been at least two weeks since you’ve had a booster shot, and you still contract COVID-19, the odds are high that you have the Omicron variant, Dr. Russo says.