Vaccine Effectiveness Against Lineage-matched and -mismatched Influenza B Viruses Across 8 Seasons in Canada, 2010-2011 to 2017-2018.

Skowronski, Danuta M; Chambers, Catharine; De Serres, Gaston; Sabaiduc, Suzana; Winter, Anne-Luise; Dickinson, James A; Gubbay, Jonathan B; Drews, Steven J et al. · Clin Infect Dis · 2019

retrospective_cohort · Level III

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Abstract

Vaccine effectiveness (VE) against influenza B was derived separately for Victoria and Yamagata lineages across 8 seasons (2010-2011 to 2017-2018) in Canada when trivalent influenza vaccine was predominantly used. VE was ≥50% regardless of lineage match to circulating viruses, except when the vaccine strain was unchanged from the prior season.

Medical subject headings