Influenza--United States, 1987-88 season.
D000328:Adult; D000368:Aged; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D009980:Influenza A virus / Q000302:isolation & purification; D009981:Influenza B virus / Q000302:isolation & purification; D007251:Influenza, Human / Q000453:epidemiology* / Q000401:mortality / Q000517:prevention & control; D009735:Nursing Homes; D011159:Population Surveillance; D012621:Seasons; D012767:Ships; D014481:United States; D014944:World Health Organization