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. 2012 Mar 22;17(12):20129.

Early estimates of the effectiveness of the 2011/12 influenza vaccine in the population targeted for vaccination in Spain, 25 December 2011 to 19 February 2012

S Jimenez-Jorge  1 , S de Mateo, F Pozo, I Casas, M Garcia Cenoz, J Castilla, V Gallardo, E Perez, T Vega, C Rodriguez, C Quinones, E Martinez, J Gimenez, Jm Vanrell, D Castrillejo, Mc Serrano, Jm Ramos, A Larrauri
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  • PMID: 22490308
Free article

Early estimates of the effectiveness of the 2011/12 influenza vaccine in the population targeted for vaccination in Spain, 25 December 2011 to 19 February 2012

S Jimenez-Jorge et al. Euro Surveill. .
Free article

Abstract

We present early estimates of influenza vaccine effectiveness (VE) in the population targeted for vaccination, during 25 December 2011 to 19 February 2012. The adjusted VE was 55% (95% CI: 3 to 79) against any type of influenza virus and 54% (95% CI: 1 to 79) against influenza A(H3N2) virus. This suggests a moderate protective effect of the vaccine in the targeted population in a late influenza epidemic with limited match between vaccine and circulating strains.

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