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Effectiveness of bivalent mRNA booster vaccination against SARS-CoV-2 Omicron infection, the Netherlands, September to December 2022

  • Anne J Huiberts
  • , Brechje de Gier
  • , Christina E Hoeve
  • , Hester E de Melker
  • , Susan Jm Hahné
  • , Radboud center
  • , Janneke Hhm van de Wijgert
  • , Susan van den Hof
  • , Mirjam J Knol

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We used data of 32,542 prospective cohort study participants who previously received primary and one or two monovalent booster COVID-19 vaccinations. Between 26 September and 19 December 2022, relative effectiveness of bivalent original/Omicron BA.1 vaccination against self-reported Omicron SARS-CoV-2 infection was 31% in 18-59-year-olds and 14% in 60-85-year-olds. Protection of Omicron infection was higher than of bivalent vaccination without prior infection. Although bivalent booster vaccination increases protection against COVID-19 hospitalisations, we found limited added benefit in preventing SARS-CoV-2 infection.

Original languageEnglish
JournalEurosurveillance
Volume28
Issue number7
DOIs
Publication statusPublished - 16 Feb 2023

Keywords

  • COVID-19
  • SARS-CoV-2
  • vaccine effectiveness

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