WASHINGTON -- With winter closing in and coronavirus case rates creeping up once again, White House chief medical adviser Dr. Anthony Fauci is warning that the vaccines' waning immunity combined with ...

Add Yahoo as a preferred source to see more of our stories on Google. Everything you need to know about the new COVID booster. (Photo Illustration: Victoria Ellis for Yahoo News; photos: Getty Images) ...

If it feels like everyone you know has COVID, you're not alone. Cases are on the rise, and so are hospitalizations and deaths. So the federal government's release of new, updated COVID boosters feels ...

The original COVID-19 boosters did a great job of preventing severe illness and hospitalization, even during the delta surge. Then came omicron and its subvariants, which are more transmissible than ...