Eurosurveillance
Volume 20, Issue 4, 29 January 2015
http://www.eurosurveillance.org/Public/Articles/Archives.aspx?PublicationId=11678

Research articles
Interim estimates of 2014/15 vaccine effectiveness against influenza A(H3N2) from Canada’s Sentinel Physician Surveillance Network, January 2015
by DM Skowronski, C Chambers, S Sabaiduc, G De Serres, JA Dickinson, AL Winter, SJ Drews, K Fonseca, H Charest, JB Gubbay, M Petric, M Krajden, TL Kwindt, C Martineau, A Eshaghi, N Bastien, Y Li