We provide updated results (11 October 2023 through 29 February 2024) from our previously conducted test-negative case-control study in Kaiser Permanente Southern California to evaluate sublineage-specific effectiveness of the BNT162b2 XBB1.5-adapted vaccine. Results suggest that XBB1.5-adapted vaccines may have reduced effectiveness against JN.1 versus XBB sublineages.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11250225PMC
http://dx.doi.org/10.1093/ofid/ofae370DOI Listing

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