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One dose of Pfizer’s vaccine protects those who got COVID-19, research finds

Two new bodies of research found that those who had COVID-19 only need one dose of the Pfizer vaccine

Vials containing the Pfizer-BioNTech COVID-19 vaccine in Utah.
Vials containing the Pfizer-BioNTech COVID-19 vaccine are pictured at the Mountain America Exposition Center in Sandy on Thursday, Feb. 11, 2021.
Laura Seitz, Deseret News

People who were infected with the novel coronavirus only need a single dose of Pfizer’s COVID-19 vaccine, according to new studies released from Britain.

What’s going on?

The New York Times reports that two studies published in The Lancet, a prominent medical journal, found that a single dose of the Pfizer vaccine offers enough protection against the coronavirus for those who have had COVID-19.

  • One of the studies — done by the University College London and Public Health England — followed 51 health workers in London who submitted results of antibody tests. About half had been infected with COVID-19. Those who got a single dose of Pfizer’s vaccine had a more than 140-fold protection against the virus.
  • The second study — published from Imperial College London — followed 72 health workers who got the vaccine in December 2020. One dose of the Pfizer vaccine created a strong antibody response as well.

Why it matters

Researchers from the University College London and Public Health England suggested that the new studies mean the COVID-19 vaccine rollout could move quickly if this is the case, according to The New York Times.

  • “This could potentially accelerate vaccine rollout,” the researchers said.
  • “Wider coverage without compromising vaccine-induced immunity could help reduce variant emergence,” the researchers said, according to The New York Times.

A third shot?

The COVID-19 vaccine developer Pfizer said it is working on a third shot to defeat the novel coronavirus variants, as I wrote about for the Deseret News. Right now, experts still advise everyone gets both doses of Pfizer and Moderna shots to have full protection against the coronavirus.