Effectiveness of Omicron XBB.1.5 vaccine against infection with SARS-CoV-2 Omicron XBB and JN.1 variants, prospective cohort study, the Netherlands, October 2023 to January 2024

Anne J Huiberts, Christina E Hoeve, Brechje de Gier, Jeroen Cremer, Bas van der Veer, Hester E de Melker, Janneke Hhm van de Wijgert, Susan van den Hof, Dirk Eggink, Mirjam J Knol*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

We estimated vaccine effectiveness (VE) of SARS-CoV-2 Omicron XBB.1.5 vaccination against self-reported infection between 9 October 2023 and 9 January 2024 in 23,895 XBB.1.5 vaccine-eligible adults who had previously received at least one booster. VE was 41% (95% CI: 23-55) in 18-59-year-olds and 50% (95% CI: 44-56) in 60-85-year-olds. Sequencing data suggest lower protection against the BA.2.86 (including JN.1) variant from recent prior infection (OR = 2.8; 95% CI:1.2-6.5) and, not statistically significant, from XBB.1.5 vaccination (OR = 1.5; 95% CI:0.8-2.6).

Original languageEnglish
Article numbere2400109
JournalEurosurveillance
Volume29
Issue number10
DOIs
Publication statusPublished - 7 Mar 2024

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