Human infection with new  influenza A (H1N1) virus:   clinical observations from   a school-associated   outbreak in Kobe, Japan,   May 2009.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks / Q000517:prevention & control; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype; D007251:Influenza, Human / Q000453:epidemiology* / Q000517:prevention & control; D007564:Japan / Q000453:epidemiology; D008875:Middle Aged; D012574:Schools; D055815:Young Adult