Publication: Influenza vaccine effectiveness in Spain 2013/14: subtype-specific early estimates using the cycEVA study
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2014-03-06
Authors
Jimenez-Jorge, Silvia ISCIII 
Pozo Sanchez, Francisco ISCIII
Mateo-Ontañon, Salvador de ISCIII
Delgado-Sanz, Concepcion ISCIII
Casas Flecha, Inmaculada ISCIII 
Garcia-Cenoz, Manuel ISCIII
Castilla Catalán, Jesús
Sancho, R
Etxebarriarteun-Aranzabal, L
Quinones, C
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European Centre for Disease Prevention and Control (ECDC)
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Abstract
Adjusted early estimates of the 2013/14 influenza vaccine effectiveness (VE) in Spain for all age groups was 35% (95% CI: -9 to 62), 33% (95% CI: -33 to 67) and 28% (95% CI: -33 to 61) against any influenza virus type, A(H1N1)pdm09 and A(H3N2) viruses, respectively. For the population targeted for vaccination, the adjusted VE was 44% (95% CI: -11 to 72), 36% (95% CI: -64 to 75) and 42% (95% CI: -29 to 74), respectively. These preliminary results in Spain suggest a suboptimal protective effect of the vaccine against circulating influenza viruses.
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Bibliographic citation
Euro Surveill. 2014 Mar 6;19(9). pii: 20727.