Pfizer and BioNTech said Wednesday that initial lab tests show that the omicron variant partly escapes protection offered by the companies' two-dose regimen of their COVID-19 vaccine. However, those ...

A Pfizer-BioNTech Covid-19 booster shot appears to provide strong protection against the omicron variant, while the initial two-dose vaccine may be insufficient to prevent infection, the companies ...

The U.S. Food and Drug Administration on Tuesday authorized Pfizer's omicron booster shot for kids under five years old who were previously vaccinated with three doses of the company's original ...

News that a Pfizer booster shot does a good job protecting against the COVID-19 Omicron variant was greeted enthusiastically by Wall Street Wednesday, as the stock markets got a big boost amid hopes ...

Pfizer asked U.S. regulators Monday to expand use of its updated COVID-19 booster shot to children ages 5 to 11. Elementary school-aged children already received kid-sized doses of Pfizer’s original ...

Pfizer announced Thursday that a third shot of its COVID-19 vaccine raised omicron-fighting antibody by 36 times in children ages 5 to 11. Pfizer/BioNTech plans to request emergency use authorization ...

Pfizer and BioNTech released more human data Friday indicating the omicron BA.5 boosters perform better than the old Covid shots. Stream NBC 5 for free, 24/7, wherever you are. People older than 55 ...

NEW YORK -- This holiday season held promise for Americans, many of whom spent Christmas 2020 in quarantine or away from loved ones due to a nasty winter COVID-19 surge. Yet in the last week or so, ...