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COVID-19 vaccination and BA.1 breakthrough infection induce neutralising antibodies which are less efficient against BA.4 and BA.5 Omicron variants, Israel, March to June 2022

  • Limor Kliker
  • , Neta Zuckerman
  • , Nofar Atari
  • , Noam Barda
  • , Mayan Gilboa
  • , Ital Nemet
  • , Bayan Abd Elkader
  • , Ilana S. Fratty
  • , Hanaa Jaber
  • , Ella Mendelson
  • , Sharon Alroy-Preis
  • , Yitshak Kreiss
  • , Gili Regev-Yochay
  • , Michal Mandelboim
  • Ministry of Health, Israel
  • Tel Aviv University
  • Sheba Medical Center at Tel Hashomer

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

This work evaluated neutralising antibody titres against wild type (WT) SARS-CoV-2 and four Omicron variants (BA.1, BA.2, BA.4 and BA.5) in healthcare workers who had breakthrough BA.1 infection. Omicron breakthrough infection in individuals vaccinated three or four times before infection resulted in increased neutralising antibodies against the WT virus. The fourth vaccine dose did not further improve the neutralising efficiency over the third dose against all Omicron variants, especially BA.4 and BA.5. An Omicron-specific vaccine may be indicated.

Original languageEnglish
JournalEurosurveillance
Volume27
Issue number30
DOIs
StatePublished - 28 Jul 2022
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2022 European Centre for Disease Prevention and Control (ECDC). All rights reserved.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

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