title: Streptococcal epidemics in two populations of "normal" families.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002353:Carrier State; D002648:Child; D002675:Child, Preschool; D003201:Computers; D004196:Disease Outbreaks; D005163:Factor Analysis, Statistical; D005260:Female; D006798:Housing; D006801:Humans; D008297:Male; D008962:Models, Theoretical; D009518:New York; D011446:Prospective Studies; D012621:Seasons; D013290:Streptococcal Infections / Q000235:genetics*; D013997:Time Factors