Surveillance and impact of influenza in Europe. Groupe Régional d'Observation de la Grippe and European Influenza Surveillance Scheme.
Aymard
M
M
National Influenza Reference Center, Laboratoire de Virologie, Lyon, France.
Valette
M
M
Lina
B
B
Thouvenot
D
D
D001530:Belgium / Q000453:epidemiology; D005602:France / Q000453:epidemiology; D005858:Germany / Q000453:epidemiology; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D009426:Netherlands / Q000453:epidemiology; D011174:Portugal / Q000453:epidemiology; D018571:Sentinel Surveillance; D013557:Switzerland / Q000453:epidemiology; D006113:United Kingdom / Q000453:epidemiology