Real-world effectiveness with the recommended single dose of respiratory syncytial virus (RSV) vaccination dipped in older ...

The effectiveness of a single respiratory syncytial virus (RSV) vaccine dose declined among older adults, potentially suggesting the need for booster shots among this demographic. That is according to ...

Health experts are reinforcing the point that full vaccination remains highly effective against severe illness and death caused by COVID-19 as federal regulators consider the possibility of ...

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 ...

Researchers at University of Tsukuba have demonstrated that during Japan's COVID-19 booster vaccination campaign, online ...

The Centers for Disease Control and Prevention is issuing new advice for people who are immunocompromised. The health organization said people who've had the MRNA vaccines should look to get a fourth ...

Millions of Americans are one step closer to getting a COVID-19 booster shot. The Food and Drug Administration (FDA) amended its emergency use authorization for a Pfizer booster shot Wednesday. It ...

SAN FRANCISCO -- Moderna announced people may need a second booster to increase protection. But is a fourth shot the right approach? ABC7 News reporter Luz Pena from San Francisco spoke to multiple ...