Pfizer says its vaccine booster provides protection against the Omicron variant


Early data suggests three doses of Pfizer and BioNTech's COVID-19 vaccine provides protection against the new Omicron variant, the companies say.
Pfizer and BioNTech announced Wednesday that a third dose of its COVID-19 vaccine offers a similar amount of protection against the new Omicron variant as two doses of the vaccine does against the original strain of the coronavirus, NBC News reports. The companies also said, however, that preliminary studies indicate two doses "may not be sufficient to protect against infection with the Omicron variant," and a third dose provides "more robust" protection.
"Although two doses of the vaccine may still offer protection against severe disease caused by the Omicron strain, it's clear from these preliminary data that protection is improved with a third dose of our vaccine," Pfizer CEO Albert Bourla said. "Ensuring as many people as possible are fully vaccinated with the first two dose series and a booster remains the best course of action to prevent the spread of COVID-19."
Subscribe to The Week
Escape your echo chamber. Get the facts behind the news, plus analysis from multiple perspectives.

Sign up for The Week's Free Newsletters
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
From our morning news briefing to a weekly Good News Newsletter, get the best of The Week delivered directly to your inbox.
BioNTech CEO Ugur Sahin added that "our preliminary, first dataset indicate that a third dose could still offer a sufficient level of protection from disease of any severity caused by the Omicron variant."
The news comes less than two weeks after the World Health Organization designated the new Omicron variant a variant of concern. Asked on the Today show whether this new data suggests a two-shot Pfizer regime is "effectively useless" against Omicron, Bourla stressed that there still is "tremendous value" in receiving two doses "compared to if you only have one or if you don't have any."
Bourla added, "It might not be enough on itself, but we are waiting to see. So you may need to go to get the third booster faster, and that's something that the health authorities should consider very carefully and make their recommendations."
Sign up for Today's Best Articles in your inbox
A free daily email with the biggest news stories of the day – and the best features from TheWeek.com
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.
-
Today's political cartoons - March 29, 2025
Cartoons Saturday's cartoons - my way or Norway, running orders, and more
By The Week US Published
-
5 tactically sound cartoons about the leaked Signal chat
Cartoons Artists take on the clown signal, baby steps, and more
By The Week US Published
-
Roast lamb shoulder with ginger and fresh turmeric recipe
The Week Recommends Succulent and tender and falls off the bone with ease
By The Week UK Published
-
Measles outbreak spreads, as does RFK Jr.'s influence
Speed Read The outbreak centered in Texas has grown to at least three states and Health Secretary Robert F. Kennedy Jr. is promoting unproven treatments
By Peter Weber, The Week US Published
-
Five years on: How Covid changed everything
Feature We seem to have collectively forgotten Covid’s horrors, but they have completely reshaped politics
By The Week US Published
-
RFK Jr. offers alternative remedies as measles spreads
Speed Read Health secretary Robert F. Kennedy Jr. makes unsupported claims about containing the spread as vaccine skepticism grows
By Peter Weber, The Week US Published
-
Texas outbreak brings 1st US measles death since 2015
Speed read The outbreak is concentrated in a 'close-knit, undervaccinated' Mennonite community in rural Gaines County
By Rafi Schwartz, The Week US Published
-
Mystery illness spreading in Congo rapidly kills dozens
Speed Read The World Health Organization said 53 people have died in an outbreak that originated in a village where three children ate a bat carcass
By Peter Weber, The Week US Published
-
Ozempic can curb alcohol cravings, study finds
Speed read Weight loss drugs like Ozempic and Wegovy may also be helpful in limiting alcohol consumption
By Peter Weber, The Week US Published
-
New form of H5N1 bird flu found in US dairy cows
Speed Read This new form of bird flu is different from the version that spread through herds in the last year
By Peter Weber, The Week US Published
-
Microplastics accumulating in human brains, study finds
Speed Read The amount of tiny plastic particles found in human brains increased dramatically from 2016 to 2024
By Peter Weber, The Week US Published