U.K. Adds to Arsenal With Approval of One-Shot J&J Vaccine

  • Vaccine is the fourth to be cleared for use by U.K. regulators
  • Shot was 66% effective against severe Covid-19 in trials

One-shot doses of the Johnson & Johnson Covid-19 vaccine.

Photographer: Mario Tama/Getty Images
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The U.K. cleared a Covid-19 vaccine for use from Johnson & Johnson, the first single-dose shot to be authorized in Britain against the disease.

J&J’s vaccine was given the green light for people ages 18 and over, the country’s drug regulator said Friday in a statement. The authorization from the Medicines and Healthcare Products Regulatory Agency gives Britain a fourth shot in its arsenal, though its use may be initially limited given more than half the population has already received one vaccine dose.