Protection by a Fourth Dose of BNT162b2 against Omicron in Israel

Yinon M Bar‐On, Yair Goldberg, Micha Mandel, Omri Bodenheimer, Ofra Amir, Laurence Freedman, Sharon Alroy-Preis, Nachman Ash, Amit Huppert, Ron Milo

Research output: Contribution to journalArticlepeer-review

Abstract

The spread of the omicron variant produced an increase in Covid-19 in Israel in late 2021, and a second boost of BNT162b2 vaccine was authorized in early January 2022. This article reports the efficacy of the fourth dose among Israeli citizens 60 years of age or older. Rates of severe illness were reduced by a factor of 3.5 in the fourth week after the second boost.
Original languageEnglish
Pages (from-to)1712-1720
Number of pages9
JournalNew England Journal of Medicine
Volume386
Issue number18
Early online date5 May 2022
DOIs
StatePublished - 5 May 2022

All Science Journal Classification (ASJC) codes

  • General Medicine

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