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

Younger Americans are more likely than older people to say these changes have influenced their decision. Among adults under 30 who are familiar with the CDC’s changes, about half say these changes ...

A real-world test of Pfizer’s COVID-19 vaccine in more than half a million people confirms that it’s very effective at preventing serious illness or death, even after one dose. Wednesday’s published ...

On December 18, a San Diego emergency room nurse was given a shot of the COVID-19 vaccine. A week later, he tested positive for the virus, CNN affiliate KGTV reported. Stories like this will become ...

A senior Food and Drug Administration official on Friday said the agency will change its vaccine approval process, alleging ...

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

Johnson & Johnson said Thursday that new data shows that its single-shot COVID-19 vaccine provides protection against the virus for at least eight months and effectively prevents infection from ...

On May 20, U.S. Food and Drug Administration (FDA) officials announced that Covid-19 vaccines will no longer be available to everyone. Instead, annual boosters will be limited to people ages 65 and ...

The FDA’s top vaccine regulator asserted in a staff email that the Covid vaccine caused at least 10 kids' deaths, but experts ...

WASHINGTON -- The top U.S. infectious disease expert said AstraZeneca's suspension of final testing of its COVID-19 vaccine candidate shows "one of the safety valves" built into the studies to spot ...