immune system
Smoothie and supplement companies might get your hopes up, but "medically, it doesn’t really make sense".
The promising vaccine, developed by Dr. Anthony Fauci’s colleagues at the National Institutes of Health and Moderna Inc., was the first tested in the U.S.
Confused about antibodies, and whether you can get coronavirus twice? Here's what an immunology expert wants you to know.
Experts share what you need to know about the blood tests that show a COVID-19 infection and possible immunity.
"If you care about people, then care about vulnerable people as well."