title: Insights from Europe related to pandemic influenza A(H1N1)2009 have international relevance.
authors: Ha
authors: H
authors: Kelly
authors: Bj
authors: B
authors: Cowling
mesh_terms: D017677:Age Distribution; D005060:Europe / Q000453:epidemiology; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000175:diagnosis / Q000453:epidemiology* / Q000821:virology; D058873:Pandemics; D011159:Population Surveillance; D012307:Risk Factors