Decline in influenza vaccine effectiveness with time after vaccination, Navarre, Spain, season 2011/12
Castilla, J and Martínez-Baz, I and Martínez-Artola, V and Reina, G and Pozo, F and García Cenoz, M and Guevara, M and Moran, J and Irisarri, F and Arriazu, M and Albéniz, E and Ezpeleta, C and Barricarte, A and Primary Health Care Sentinel Network, Collective and Network for Influenza Surveillance in Hospitals of Navarre, Collective, Eurosurveillance, 18, 20388 (2013), https://doi.org/10.2807/ese.18.05.20388-en