Simultaneous administration of a COVID-19 mRNA booster shot and the seasonal influenza vaccine slightly increased the risk of systemic reactions during the following week compared with a booster shot ...

A recent study has provided the first side-by-side comparison of how three major COVID-19 vaccine types differ in triggering ...

With the Delta variant in play, federal health officials are analyzing the latest numbers to look at the frequency and seriousness of COVID-19 breakthrough infections. Will we need booster shots? And ...

As flu season approaches, infectious disease experts have an important message for you: If you're not vaccinated or boosted against COVID-19 yet, go ahead and get the shot. And while you're at it, go ...

As the Christmas season looms, with its crowded end-of-year parties, family gatherings and busy travel schedules, many New ...

Scientists are trying to understand why a small number of people may develop adverse reactions to the Covid vaccine. Researchers from Yale analyzed the blood of 42 people who struggled with ...

Facing yet another COVID-19 variant, this one said to be faster and stealthier than those before it, health officials say the calculus has changed and are urging booster shots even more strongly to ...

By 2025, more than 13 billion doses of the vaccine are estimated to have been administered globally, saving untold millions ...

In what has become a pattern of spreading vaccine misinformation, the Florida health department is telling older Floridians and others at highest risk from COVID-19 to avoid most booster shots, saying ...

The head of the Food and Drug Administration said Tuesday that the agency is now looking at whether it will still approve COVID-19 vaccines for next winter, citing a lack of data on booster shots. "We ...