Pfizer says 3rd dose of its vaccine is effective in kids under 5

Pfizer-BioNTech vaccine
(Image credit: JOSEPH PREZIOSO/AFP via Getty Images)

A three-dose regimen of the Pfizer-BioNTech COVID-19 vaccine produces a strong immune response in kids under five, the company says.

Pfizer on Monday said a trial examining a third dose of its vaccine in young kids found the vaccine's efficacy to be 80.3 percent in children between six months and under five years old. Children in the trial received a third shot, a smaller dose than adults receive, two months after the second dose. There were over 1,600 participants in the trial.

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Brendan Morrow

Brendan worked as a culture writer at The Week from 2018 to 2023, covering the entertainment industry, including film reviews, television recaps, awards season, the box office, major movie franchises and Hollywood gossip. He has written about film and television for outlets including Bloody Disgusting, Showbiz Cheat Sheet, Heavy and The Celebrity Cafe.