With new testing requirements, it’s not even clear how new Covid or flu shots can be made available this fall.

A half-decade since the pandemic, countless individuals and families have been left wondering: what is the long-term safety ...

Dr. Marty Makary, chief of the FDA, has expressed doubts about the agency approving the COVID-19 vaccine for winter, stating ...

Placebo testing has been part of the process since the 1940s. It’s unclear what additional measures would achieve — but it may slow development.

The plans amount to an extraordinary flex of Robert F. Kennedy Jr.’s power as health secretary to make decisions ordinarily ...

If the FDA deems Pfizer’s and Moderna’s updated vaccines “new” products, it’s extremely unlikely the doses would be ready for the fall, vaccine experts say.

A landmark study by scientists at the University of Oxford, has unveiled crucial insights into the way that COVID-19 vaccines mitigate severe illness in those who have been vaccinated.

Helen Branswell covers issues broadly related to ... manufacturers of Covid vaccines might have to generate new effectiveness data before the release of annual updates of their vaccines ...

A pharmacy in New York City advertises the coronavirus vaccine on March 11 ... it was business as usual. Among the issues discussed was whether to change the coronavirus booster from a universal ...

The mRNA Covid vaccines were designed so that this ... more onerous to test by bringing up these sort of false safety concerns or false efficacy concerns,” Offit said. Dr. Sean O’Leary ...