Update: Influenza activity--United States and worldwide, 2004-05 season.
During the 2004-05 influenza season, influenza A (H1),* A (H3N2), and B viruses cocirculated worldwide, and influenza A (H3N2) viruses predominated. In addition, several Asian countries continued to report widespread outbreaks of avian influenza A (H5N1) among poultry; in Vietnam, Thailand, and Cambodia, these outbreaks were associated with severe illnesses and deaths among humans. In the United States, the 2004-05 influenza season peaked in February, was moderate, and was associated predominantly with influenza A (H3N2) viruses. This report summarizes influenza activity in the United States and worldwide during the 2004-05 influenza season.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D014943:Global Health; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D007223:Infant; D009980:Influenza A virus; D009981:Influenza B virus; D007251:Influenza, Human / Q000453:epidemiology*; D011024:Pneumonia, Viral / Q000453:epidemiology; D014481:United States / Q000453:epidemiology