[An epidemiological analysis of encephalitis B in Tianjin in 1980].
D000328:Adult; D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D002681:China; D004672:Encephalitis, Japanese / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D013997:Time Factors