LOS ANGELES -- The COVID-19 vaccines made by Pfizer and Moderna both require two doses to be administered, several weeks apart, for them to be fully effective. But there has been some scientific ...

A new mRNA vaccine against the flu has proven itself more effective than existing vaccines in a new clinical trial. The Pfizer-developed vaccine was found to be 34.5 percent more effective than ...

Pfizer’s mRNA flu vaccine outperformed the standard flu shot in a Phase 3 clinical trial, according to results published Wednesday in the New England Journal of Medicine. The vaccine uses the same ...

WASHINGTON — Pfizer and Moderna say the Food and Drug Administration have opened up COVID-19 booster shots to all adults, letting them choose another dose of either vaccine. The move expands the ...

A third dose of the Pfizer/BioNTech COVID-19 vaccine can "strongly" boost protection against the delta variant -- beyond the protection afforded by the standard two doses, suggests new data released ...

Pfizer has released the full data from its phase 3 trial of an mRNA flu vaccine candidate, with the potential new shot demonstrating 34.5% greater efficacy compared to a control vaccine. Of 9,225 ...

WASHINGTON (AP) — U.S. regulators approved updated COVID-19 shots Wednesday but limited their use for many Americans — and removed one of the two vaccines available for young children. The new shots ...

The ability to inoculate young children against COVID-19 in the U.S. may be diminished this fall as the FDA weighs whether to renew the emergency green light for the vaccine currently cleared in the ...

Jan 20 (Reuters) - The following is a roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for COVID-19, the illness caused by the ...

The Department of Health and Human Services will cancel 22 vaccine development projects totaling $500 million, marking a major policy shift under Secretary Robert F. Kennedy Jr. that directly affects ...