Influenza vaccine effectiveness in adults 65 years and older, Denmark, 2015/16 – A rapid epidemiological and virological assessment

Hanne Dorthe Emborg*, T. G. Krause, L. Nielsen, M. K. Thomsen, C. B. Christiansen, M. N. Skov, X. C. Nielsen, L. S. Weinreich, T. K. Fischer, J. Rønn, R. Trebbien

*Corresponding author af dette arbejde

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Abstrakt

In Denmark, both influenza A(H1N1)pdm09 and influenza B co-circulated in the 2015/16 season. We estimated the vaccine effectiveness (VE) of the trivalent influenza vaccine in patients 65 years and older using the test-negative case–control design. The adjusted VE against influenza A(H1N1)pdm09 was 35.0% (95% confidence interval (CI): 11.1–52.4) and against influenza B 4.1% (95% CI: −22.0 to 24.7). The majority of influenza A(H1N1)pdm09 circulating in 2015/16 belonged to the new genetic subgroup subclade 6B.1.

OriginalsprogEngelsk
TidsskriftEurosurveillance
Vol/bind21
Udgave nummer14
DOI
StatusUdgivet - 7 apr. 2016

Fingeraftryk

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