The study on 19,000 people in the UK found one Pfizer shot was about 36% effective...

Hilary Young and three other fully vaccinated adults in her family got sick after one of...

Christopher Murray, director of the IHME, which the White House leans on for COVID data,...

Antibody tests were not designed to measure Covid-19 vaccine immunity. Dr Anthony Fauci...

Cardiologists say "we are seeing a lot of inflammation of the heart in Covid-19," which...

Neurointensivist Ali Seifi turned his son's McFlurry straw into an early prototype for...

Scientists are carefully optimistic that a few flu varieties may have died out during the...

How long will protection last? Can we make better vaccines? And when will there be shots...