Yale researchers have found clues as to why certain people experience adverse health effects after the COVID-19 vaccine, ...

Federal funding for a Bay Area biotech company's potential half-billion-dollar oral Covid-19 vaccine project has been paused ...

Editor’s note: The Covid-19 Vaccine Frequently Asked Questions page has been retired. Updated information regarding Covid-19 vaccination may be found at the NEJM Covid-19 Vaccine Resource Center.

A nasal vaccine for COVID-19—based on technology developed at Washington University in St. Louis—is poised to enter a phase 1 clinical trial in the U.S. after an investigational new drug ...