Rare but dangerous blood clotting associated with that vaccine as well as AstraZeneca’s had a genetic cause, according to a new paper.

Moderna reported falling fourth-quarter sales as Covid-19 vaccine demand continued to drop, but continues to target 10% ...

The vaccine maker’s shots involve the successful Covid vaccines’ RNA technology. Health Secretary Robert F. Kennedy Jr. has ...

When people get the shots, the body’s immune system can accidentally confuse a normal protein from adenovirus - which is used ...

You can’t blame this one on the stork. After a brief baby bump early in the COVID-19 pandemic, birth rates in the US and ...

America’s drug safety agency declined to review a next-gen flu vaccine that uses the same tech as the coronavirus shots ...

One panelist accused the F.D.A. of withholding data on potential harms. The advisers also are reviewing research on vaccines ...

Add Yahoo as a preferred source to see more of our stories on Google. Confusion over vaccine recommendations in the U.S. has hit a boiling point as the responsibility for handling them has spilled ...

Years later, we now have a much better idea of the side affects.

Researchers identify genetic mutation in small group of people who developed the serious disorder after receiving the AstraZeneca or Johnson & Johnson vaccine.

FDA refuses Moderna's mRNA flu vaccine application, citing inadequate study design, as the company disputes decision, saying it contradicts prior FDA guidance.