The Latest Breaking News from Pfizer

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Review finds those who have received two doses of Pfizer/BioNTech, AstraZeneca or Moderna vaccine, or one dose of single-shot J&J vaccine, half as likely to develop long Covid symptoms

UK cases down 30% on the previous week, with weekly deaths down 27.2%; 500 French vehicles arrive in Brussels to protest against Covid measures

More than 600 people recently vaccinated against COVID-19 in Connecticut must get the jab again because of improper storage of the shots.

HARTFORD, Conn. — Nearly 650 people who received a Pfizer COVID-19 vaccine at a clinic in New Haven between Christmas and Feb. 7 will need to get another shot, city health officials said late Friday, because the vaccine was improperly stored.

Experts say waiting for data on three doses is the right call.

The FDA says it needs more time to review data on a potential three-dose vaccine for children aged 6 months to four

The efficacy of third doses of the Pfizer and Moderna mRNA vaccines wanes substantially by the fourth month after administration, a new study by the US Centers of Disease Control and Prevention (CDC) said Friday. Though it's now well documented that vaccine efficacy goes down after two doses, relatively little…

China on Saturday said it had given "conditional" approval for Pfizer's Covid-19 drug Paxlovid to treat adults with mild to moderate illness and a high risk of developing severe disease. The drug has so far been authorized in about 40 countries including the United States and Israel, while the European…