title: The epidemiology of serum hepatitis (SH) infections: a controlled study in two closed institutions.
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D002353:Carrier State; D002648:Child; D002674:Child, Institutionalized; D002675:Child, Preschool; D004314:Down Syndrome; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology; D006515:Hepatitis B virus; D006778:Hospitals, Psychiatric; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D009518:New York; D013997:Time Factors