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

Jimenez-Jorge, SilviaMateo-Ontañon, Salvador dePozo Sanchez, FranciscoCasas Flecha, InmaculadaGarcia-Cenoz, ManuelCastilla Catalán, JesúsGallardo, VPerez, EVega, TRodriguez, CQuinones, CMartinez, EGimenez, JVanrell, Juana MaríaCastrillejo, DSerrano, McRamos, JmLarrauri, Amparo2020-02-032020-02-032012-03-22Euro Surveill. 2012 Mar 22;17(12). pii: 20129.http://hdl.handle.net/20.500.12105/9007We 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.engVoRhttp://creativecommons.org/licenses/by/4.0/AdolescentAdultAgedEarly estimates of the effectiveness of the 2011/12 influenza vaccine in the population targeted for vaccination in Spain, 25 December 2011 to 19 February 2012Atribución 4.0 Internacional22490308171210.2807/ese.17.12.20129-en1560-7917Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletinopen access