title: Influenza activity in the Southern Hemisphere: a preliminary look at the winter 2007 season.
mesh_terms: D000328:Adult; D002648:Child; D004196:Disease Outbreaks / Q000706:statistics & numerical data*; D014943:Global Health; D006801:Humans; D015994:Incidence; D007251:Influenza, Human / Q000453:epidemiology* / Q000821:virology; D012621:Seasons; D015996:Survival Rate; D014944:World Health Organization