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 ...

NEW YORK CITY (WABC) -- The CDC is reporting troubling statistics when it comes to second doses of the Pfizer and Moderna COVID vaccine. They believe 8 percent of Americans who got their first dose ...

PHILADELPHIA -- To help fend off another wave of Covid-19, people will need a fourth dose of vaccine, Pfizer CEO Albert Bourla said Sunday. "Many variants are coming, and Omicron was the first one ...

During an appearance on CBS News Sunday, Pfizer CEO Albert Bourla said that Americans would need a fourth dose of a COVID-19 vaccine to fend off future variants of the virus. Speaking with anchor ...

Full US Food and Drug Administration approval of the Pfizer/BioNTech COVID-19 vaccine is "imminent," a senior federal official told CNN on Friday -- but said no date has been mentioned. A person ...

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% — ...

The World Health Organization’s Strategic Advisory Group of Experts on immunization said the interval between doses of Pfizer-BioNTech’s COVID-19 vaccine can be extended up to 42 days in countries ...

To help fend off another wave of Covid-19, people will need a fourth dose of vaccine, Pfizer CEO Albert Bourla said Sunday. "Many variants are coming, and Omicron was the first one that was able to ...