Nobel Laureate Peter Medawar once defined a virus as “a piece of bad news wrapped up in protein.” He wrote in 1983 that “no virus is known to do good.” The key to stopping the…

PHILADELPHIA — Researchers around the world started work on a coronavirus vaccine on Jan. 11, the moment their Chinese counterparts published the microbe’s genetic code. At Inovio Pharmaceuticals in Plymouth Meeting, Pa., scientists made a…

Dear Dr. Roach: Can you please speak about the BCG vaccine? My daughter was born in Bolivia and received it as an infant. Now she always tests positive for tuberculosis, and people in the medical…

Our iPhones, social media and laptops give us a sense of connection, but there’s nothing like an infectious disease such as the flu to understand what “going viral” really means. Our connection also means we…

DEAR DR. ROACH: My daughter got the Gardasil shot when she was 16 years old. Now there is a new, more effective vaccine — Gardasil 9. Is it advisable to get another vaccine? Also, if…

NEW YORK (AP) — It’s early, but the current flu season is shaping up to be gentler than last winter’s unusually brutal one, U.S. health officials said. In most parts of the country, most illnesses…