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 ...

WASHINGTON -- People with certain health conditions that make them moderately or severely immunocompromised may get a fourth mRNA COVID-19 shot, according to updated guidelines from the US Centers for ...

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 ...

Looking to get a COVID-19 vaccine booster for yourself or your child this fall? It may be a bit more complicated than just making an appointment. In August, the U.S. Food and Drug Administration ...

If you've been hopping between arms for booster shots, a new study suggests that your lymph nodes remember exactly where you first got jabbed and perform far better when you return to that same arm.

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

WASHINGTON -- President Joe Biden said Friday that his administration was looking into whether to shorten the window of the planned Covid-19 booster shot program, something he discussed with Israel ...

Next month marks the countdown toward flu season, and it’s also typically when many have gotten a COVID booster, too. But with new guidance from new leadership on the federal level, things have ...

This report provides useful evidence that EABR mRNA is at least as effective as standard S mRNA vaccines for the SARS-CoV-2 booster vaccine. Although the methodology and the experimental approaches ...

PHOENIX — Many Arizona pharmacies now have the COVID-19 vaccine in stock, but that doesn’t mean it will be easy to get a booster shot this fall. The ABC15 Investigators spot-checked Valley pharmacies ...