Financial TimesFinancial Times

Why do Covid boosters offer greater protection against Omicron?

By Hannah Kuchler, Donato Paolo Mancini, Oliver Barnes

14 Dec 2021 · 4 min read

In the race to protect their populations against the Omicron coronavirus variant, countries including the UK and US, are rolling out extensive booster programmes after data showed additional jabs provided more protection against the new strain than two shots.

The data — from the University of Oxford — on Monday showed levels of neutralising antibodies that attacked the virus fell against Omicron, compared with Delta, in people who had taken two doses of the vaccine it developed with AstraZeneca, or of the BioNTech/Pfizer shot.

Sign in to informed

  • Curated articles from premium publishers, ad-free
  • Concise Daily Briefs with quick-read summaries
  • Read, listen, save for later, or enjoy offline
  • Enjoy personalized content