Some viruses mutate more rapidly than others. Learn more about why that is and what that means for your health.

Some people who get sick with COVID-19 don't feel any symptoms of the disease, but what does an asymptomatic COVID-19 ...

This year’s updated COVID-19 vaccines have been approved by the U.S. Food and Drug Administration for adults 65 and older and younger people with certain medical conditions that put them at a higher ...

Testing positive for COVID-19 is not exactly a positive experience. After all, wanting to go viral these days doesn’t tend to mean wanting to be infected by the severe acute respiratory syndrome ...

After that, "most people recommend wearing a mask or having some sort of protective isolation for about five to seven days," ...

HOUSTON, Texas (KTRK) -- A Houston-area 23-year-old who says she took every precaution to not get COVID-19 has a warning for other young people about the severity of the illness. Peyton Chesser, 23, ...

5 years later: What it's like living with long COVID Yahoo News Senior Editor Ed Hornick details his five-year battle against long COVID, writing that "we are simply trying to survive in a world that ...