Dr. Mallika Marshall is answering your coronavirus vaccine-related medical questions.
Dr. Mallika Marshall is answering your coronavirus vaccine-related medical questions.
The delta variant now accounts for 1 in 4 infections in the United States. Dr. Mallika Marshall explains why wearing a mask could..
At a lower dose, the company says it could stretch its supply and produce up to 300 million doses annually. Dr. Mallika Marshall..