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Decline in influenza vaccine effectiveness with time after vaccination, Navarre, Spain, season 2011/12.
Castilla J, Martínez-Baz I, Martínez-Artola V, Reina G, Pozo F, García Cenoz M, Guevara M, Morán J, Irisarri F, Arriazu M, Albéniz E, Ezpeleta C, Barricarte A; Primary Health Care Sentinel Network; Network for Influenza Surveillance in Hospitals of Navarre. Castilla J, et al. Euro Surveill. 2013 Jan 31;18(5):20388. doi: 10.2807/ese.18.05.20388-en. Euro Surveill. 2013. PMID: 23399423 Free article.