The RNA basically encodes all of the instructions that that virus needs in order to infect a cell and go to work, you know, turning that cell into a factory to make more copies of the virus. So the ...

Do I need to get tested for COVID-19 if I'm vaccinated? The answer is, yes, if you've been around someone who has COVID-19. The latest guidance from the U.S. Centers for Disease Control and Prevention ...

SAN FRANCISCO -- With the Delta variant and breakthrough cases of COVID-19 reported, some vaccinated people are wondering when, if at all, they should get tested. Health officials say there are at ...

CHICAGO, Ill. – Despite COVID-19 testing capacities ramping up, countless people are still uncertain as to whether or not they’ve been infected. That’s because kits are still limited, and CDC ...

When someone close to you tests positive for COVID-19, it’s natural to feel an immediate sense of urgency. The question that often follows is simple but critical: how long should you wait before ...

Newly infected COVID-19 patients have two new treatment options that can be taken at home. But that convenience comes with a catch: The pills have to be taken as soon as possible once symptoms appear.