[1] Epiconcept, Dept Epidemiol, Paris, France
[2] Inst Hlth Carlos III, WHO Natl Influenza Ctr, Natl Influenza Reference Lab, Natl Ctr Microbiol, Madrid, Spain
[3] Robert Koch Inst, Dept Infect Dis Epidemiol, Resp Infect Unit, Berlin, Germany
[4] Sorbonne Univ, INSERM, IPLESP, UMRS 1136, Paris, France
[5] Inst Hlth Carlos III, Natl Epidemiol Ctr, Madrid, Spain
[6] Inst Hlth Carlos III, CIBER Epidemiol & Salud Publ CIBERESP, Madrid, Spain
[7] Publ Hlth Agcy Sweden, Stockholm, Sweden
[8] Hlth Protect Surveillance Ctr, Dublin, Ireland
[9] European Ctr Dis Prevent & Control ECDC, EPIET, Stockholm, Sweden
[10] Inst Nacl Saude Dr Ricardo Jorge, Dept Epidemiol, Lisbon, Portugal
[11] Natl Inst Publ Hlth & Environm RIVM, Bilthoven, Netherlands
[12] Cantacuzino Natl Mil Med Inst Res & Dev, Bucharest, Romania
[13] Croatian Inst Publ Hlth, Div Epidemiol Communicable Dis, Zagreb, Croatia
[14] Robert Koch Inst, Natl Reference Ctr Influenza, Berlin, Germany
[15] Univ Paris Diderot SPC, Unite Genet Mol Virus ARN, Inst Pasteur, CNRS,UMR3569, Paris, France
[16] Inst Pasteur, WHO Natl Influenza Ctr, CNR Virus Infect Resp, Paris, France
[17] Inst Nacl Saude Dr Ricardo Jorge, Dept Doencas Infeciosas, Lisbon, Portugal
[18] Nivel Netherlands Inst Hlth Serv Res, Utrecht, Netherlands
[19] European Ctr Dis Prevent & Control ECDC, Stockholm, Sweden
[20] Univ Corse, INSERM, Lab Virol, Corte, France
[21] Sorbonne Univ, INSERM, IPLESP, Paris, France
[22] Inst Pasteur, CNR Virus Infect Resp, Paris, France
[23] Grp Hosp Nord HCL, Inst Agents Infect, CNR Virus Infect Resp, Lab Virol, Lyon, France
[24] UCBL, Univ Lyon, Fac Med LYON Est, CIRI,Inserm,U1111,CNRS 5308,ENS,Lab Virpath, Lyon, France
[25] CIBERESP, Inst Hlth Carlos III, Natl Ctr Epidemiol, Madrid, Spain
[26] Comunidad Madrid, Direcc Gen Salud Publ, Madrid, Spain
[27] CIBERESP, Lab Hosp Ramon y Cajal, Madrid, Spain
[28] Inst Salud Publ Navarra IdiSNA, Pamplona, Spain
[29] CIBERESP, Pamplona, Spain
[30] Complejo Hosp Navarra IdiSNA, Pamplona, Spain
[31] Direcc Gen Salud Publ & Consumo La Rioja, La Rioja, Spain
[32] Lab Hosp San Pedro Logrono, Logrono, Spain
[33] Direcc Gen Salud Publ, Serv Epidemiol, Mallorca, Spain
[34] Lab Hosp Son Espases, Mallorca, Spain
[35] Consejeria Bienestar Social & Sanidad, DGSC, Serv Epidemiol, Melilla, Spain
[36] Publ Hlth Agcy Sweden, Stockholm, Sweden
[37] HSE Hlth Protect Surveillance Ctr, Dublin, Ireland
[38] Irish Coll Gen Practitioners, Dublin, Ireland
[39] Univ Coll Dublin, Natl Virus Reference Lab, Dublin, Ireland
[40] Inst Nacl Saude Dr Ricardo Jorge, Dept Infect Dis, Bioinformat Unit, Lisbon, Portugal
[41] Croatian Inst Publ Hlth, Dept Virol, Zagreb, Croatia
[42] Epiconcept, Paris, France