Leads from the MMWR. Acute respiratory illness among cruise-ship passengers--Asia.
D000208:Acute Disease; D000368:Aged; D000369:Aged, 80 and over; D004196:Disease Outbreaks / Q000453:epidemiology*; D005202:Asia, Eastern; D005260:Female; D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human / Q000453:epidemiology* / Q000635:transmission; D014195:Travel; D014481:United States