Influenza vaccine effectiveness in adults 65 years and older, Denmark, 2015/16 - a rapid epidemiological and virological assessment.

@article{Emborg2016InfluenzaVE,
  title={Influenza vaccine effectiveness in adults 65 years and older, Denmark, 2015/16 - a rapid epidemiological and virological assessment.},
  author={Hanne Dorthe Emborg and Tyra Grove Krause and Lene Nielsen and Marianne Kragh Thomsen and Claus Bohn Christiansen and Marianne Nielsine Skov and Xiaohui Chen Nielsen and Lenette Sandborg Weinreich and Thea K\olsen Fischer and Jesper R\onn and Ramona Trebbien},
  journal={Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin},
  year={2016},
  volume={21 14}
}
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… CONTINUE READING

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