[Characteristics of Influenza A(H1N1) notified cases].
D001938:Brazil / Q000453:epidemiology; D018563:Disease Notification; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D011159:Population Surveillance