While the delta COVID-19 variant is the dominant strain in the U.S., it’s now officially the dominant strain worldwide “by far,” officials from the World Health Organization said during a Sept. 21 ...

COVID-19 viral activity is high in the U.S., according to CDC data. Here's a look at the latest, including test positivity by ...

“The antigen that the at-home tests look for has remained fairly stable even as the virus mutates and new strains of COVID ...

The Advisory Committee on Immunization Practices recommended that only people 65 and older and those with an underlying medical condition get updated COVID-19 vaccines. The recommendations mean that ...

NEW YORK (WABC) -- The CDC is weighing a significant update to its mask information as the highly transmissible omicron variant sweeps across the nation. Federal health officials are expected to ...

A Centers for Disease Control & Prevention committee is meeting this week to discuss new guidelines for the Covid-19 vaccine.

PHILADELPHIA (WPVI) -- COVID-19 boosters could play a big role in keeping kids in school as the omicron variant surge continues. A CDC advisory panel will be discussing the extra dose on Wednesday for ...

"The rules have changed. We have a different epidemic now that we did in May." Adding more insight into the CDC’s updated mask guidance, newly published details of the Provincetown outbreak raise ...