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Abstract

Compared with individuals unvaccinated in the current and three previous influenza seasons, in 2021/22, influenza vaccine effectiveness at primary care level was 37% (95% CI: 16 to 52) for current season vaccination, regardless of previous doses, and 35% (95% CI: −3 to 45) for only previous seasons vaccination. Against influenza A(H3N2), estimates were 39% (95% CI: 16 to 55) and 24% (95% CI: −8 to 47) suggesting moderate effectiveness of current season vaccination and possible remaining effect of prior vaccinations.

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/content/10.2807/1560-7917.ES.2022.27.26.2200488
2022-06-30
2022-08-16
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2022.27.26.2200488
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