RELATED: Mandatory masking in schools reduced COVID-19 cases during delta surge, study finds"It's not that good against infections, but doesn't last very long," he continued.
Bourla said he has submitted data on a fourth dose to the Federal and Drug Administration."Many variants are coming and omicron was the first one that was able to evade in a skillful way, the immune protection that we're giving," he added.According to the U.S.
Centers for Disease Control and Prevention, anyone 12 years or older, who received the two-dose Pfizer-BioNTech vaccine, should get a third, booster shot at least five months after the second shot.
Vaccines still offer strong protection against serious illness from any type of COVID-19. But health authorities are urging everyone who’s eligible to get a booster dose for their best chance at avoiding milder breakthrough infections from the highly contagious omicron mutant.RELATED: Exercise after COVID-19 vaccine may increase antibodies, study findsChildren tend to suffer less serious illness from COVID-19 than adults.