Recurrent outbreaks of measles, chickenpox and mumps. I. Seasonal variation in contact rates.
D001723:Birth Rate; D002644:Chickenpox / Q000453:epidemiology*; D003201:Computers; D004812:Epidemiologic Methods; D006801:Humans; D008396:Maryland; D008457:Measles / Q000453:epidemiology*; D009107:Mumps / Q000453:epidemiology*; D009519:New York City; D011153:Population; D012008:Recurrence; D012621:Seasons; D013223:Statistics as Topic