Shots must be administered or discarded within six hours of reaching room temperature. When doses remain, the hunt begins for recipients.
Critics say the vaccine rollout suffers from the same problems that have plagued the response to the pandemic for testing and other responses: lack of aggressive and coordinated federal leadership.
He used medicine to take on poverty, racism and the threat of nuclear destruction. Two groups he helped start won Nobel Peace Prizes.
States turn to battlefield medical facilities as the coronavirus’s uncontrolled spread continues.
The U.S. conducts nearly 2 million coronavirus tests daily. A new analysis shows millions more are needed to protect the most vulnerable. Use our tool to see how your state is doing.