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Interim effectiveness of trivalent influenza vaccine in a season dominated by lineage mismatched influenza B, northern Spain, 2017/18

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URI: http://hdl.handle.net/20.500.12105/8993
ISSN: 1560-7917
DOI: 10.2807/1560-7917.ES.2018.23.7.18-00057

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2018

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Abstract

The 2017/18 interim estimate of trivalent influenza vaccine effectiveness (VE) was 39% (95% confidence interval: 20-54) in Navarre. Compared with individuals unvaccinated in the current and five previous seasons, VE against influenza B was 41% for current and any prior doses, 67% for current vaccination only, and 22% for any prior doses, and 43%, 51% and 54%, respectively against influenza A(H3N2). This suggests moderate VE despite predominance of lineage mismatched influenza B.

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Case-control study Influenza Influenza vaccine Influenza-like illness Repeated vaccination Vaccine effectiveness

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Adolescent Adult Aged Case-Control Studies Child Child, Preschool Female Humans Influenza A Virus, H3N2 Subtype Influenza B virus Influenza Vaccines Influenza, Human Male Middle Aged Spain Vaccination Young Adult Seasons Sentinel Surveillance

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Bibliographic citation

Euro Surveill. 2018 Feb;23(7).

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Centro Nacional de Microbiología (CNM)
IdiSNA - Instituto de Investigación Sanitaria de Navarra (Navarra)

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https://doi.org/10.2807/1560-7917.ES.2018.23.7.18-00057

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journal article