Vaccine effectiveness in preventing laboratory-confirmed influenza in Navarre, Spain: 2013/14 mid-season analysis
Open Access
- 13 February 2014
- journal article
- research article
- Published by European Centre for Disease Control and Prevention (ECDC) in Eurosurveillance
- Vol. 19 (6) , 20700-21
- https://doi.org/10.2807/1560-7917.es2014.19.6.20700
Abstract
We estimate mid-2013/14 season vaccine effectiveness (VE) of the influenza trivalent vaccine in Navarre, Spain. Influenza-like illness cases attended in hospital (n=431) and primary healthcare (n=344) were included. The overall adjusted VE in preventing laboratory-confirmed influenza was 24% (95% CI: ?14 to 50). The VE was 40% (95% CI: ?12 to 68) against influenza A(H1)pdm09 and 13% (95% CI: ?36 to 45) against influenza A(H3). These results suggest a moderate preventive effect against influenza A(H1)pdm09 and low protection against influenza A(H3).Keywords
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