The new trial, funded by Pfizer, compared the company’s mRNA shot to Fluzone, one of the most widely used seasonal flu ...

For people younger than 65, U.S.-licensed flu vaccines had an estimated effectiveness of 44% to 54% that season. Among those who completed a 6-month follow-up, the mRNA vaccine had a relative efficacy ...

The excitement of two COVID-19 vaccines with more than 90 percent efficacy is undeniable. In November, both Pfizer and Moderna announced its scientists had developed vaccines with efficacy at or near ...

SAN FRANCISCO -- Another COVID-19 vaccine -- AstraZeneca -- is poised to arrive in the U.S., bringing a fourth option for Americans. Each vaccine is administered slightly differently, some can result ...

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 ...

Video above: FDA votes to authorize more COVID-19 boosters, mix-and-matching doses in some casesA booster dose of the Pfizer/BioNTech coronavirus vaccine was found to have a high efficacy — 95.6% — ...

AstraZeneca said on Monday its vaccine for the novel coronavirus could be around 90% effective without any serious side ...

SAN FRANCISCO -- Herculean efforts by scientists and physicians around the world have resulted more than 50 experimental COVID-19 vaccines currently in global clinical trials. The focus in the U.S.

The United States is poised to get a third coronavirus vaccine -- this one made by Johnson & Johnson. The US Food and Drug Administration has given the vaccine emergency use authorization, the Centers ...