A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

Oh, and don’t believe that testing positive for COVID-19 means that you now will have enough immunity to prevent you from getting infected again. Immunity from being infected starts to wane ...

COVID reinfection raises your risk of severe health issues. Experts break down its cumulative impact on the body, plus how to avoid repeat hits of the virus.

Mark Zuckerberg responds to GOP pressure, says Biden pushed to ‘censor’ covid posts Zuckerberg says he’s ‘ready to push back if something like this happens again.’ ...

For many, Covid is increasingly regarded like the common cold. A scratchy throat and canceled plans bring a bewildering new critique from friends: You shouldn’t have tested.

Higher levels of COVID-19 are showing up in wastewater and virus-related hospitalizations spiked in July.

What are the latest Covid variants? The continued evolution of this coronavirus is not unique — it’s just what viruses do.

In a new study, scientists find that initial COVID-19 infection severity predicts severity of future reinfection. Long COVID, blood protein.

By this point in the Covid-19 pandemic, most people have had at least one brush with the virus. Those of us who have been infected again (and again) may think we know the drill. But symptoms can ...

A seasonal COVID-19 wave appears to be underway with cases growing or likely growing in 39 states.

If broadly adopted, this inclusive description of long COVID will help legitimize the ongoing struggles millions of people are facing post-infection.