Omicron and subvariants like BA.4 and BA.5 have raised the rate of reinfection with COVID-19. Though experts expect reinfections to be milder than initial infections, they still come with risks.

Covid has caused serious amounts of chronic illness. Research advances may help not only people facing chronic illnesses ...

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 ...

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

Hospitalizations are up, as are signs of COVID in waste water. New fall boosters may help, but it's unclear how effective they'll be against the latest variant.

We have many tools to fight the virus behind COVID: masks, bivalent vaccines that can be updated for new variants, and rapid tests.

My husband is high risk and still takes COVID precautions. I want our old life back.

COVID infections are on the rise, with levels surging in states around the country. Here’s a refresher on how to prevent infection — and what to do if you do get the virus.

California's latest isolation guidelines for people who test positive for COVID-19 includes the guidance that people without symptoms no longer have to isolate. Here's what you need to know.

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

No, the study was not all about whether ventilators killed patients with Covid-19. Instead, the study was all about VAP. VAP is short for ventilator-associated pneumonia.