This page is no longer being updated and reflects the status of vaccine progress through March 4, 2021. For more coverage about the pandemic, visit our coronavirus hub. 3 vaccineshave been ...

They say everything old is new again. Here are a few outdated bacteria and viruses looking to trend again as vaccination rates fall. Measles is in the air! That is to say that this highly ...

Pfizer (PFE) shares slipped on Wednesday after The Wall Street Journal reported that U.S. authorities are investigating ...

MRNA technology is facing growing doubts among Republicans. This is a KFF Health News story. Researchers racing to develop bird flu vaccines for humans have turned to a cutting-edge technology ...

Measles is considered one of the most contagious viruses in the world. It spreads through the air when an infected person coughs, sneezes or even breathes. Particles can linger in a room up to two ...

A girl with polio meets one of the first children to get a polio vaccine. Bettmann/Getty Images By Elena Conis Graphics by Sara Chodosh and Aileen Clarke Dr. Conis is a historian of medicine and ...