TY - T1 - Reduced cross-protection against influenza A(H3N2) subgroup 3C.2a and 3C.3a viruses among Finnish healthcare workers vaccinated with 2013/14 seasonal influenza vaccine SN - / UR - http://hdl.handle.net/10138/165489 T3 - A1 - Haveri, A.; Ikonen, N.; Julkunen, I.; Kantele, A.; Anttila, V. J.; Ruotsalainen, E.; Nohynek, H.; Lyytikalnen, O.; Savolainen-Kopra, C. A2 - PB - Y1 - 2015 LA - eng AB - ... VO - IS - SP - OP - KW - EVOLUTION; IMPACT; 3121 General medicine, internal medicine and other clinical medicine N1 - PP - ER -