Observation of spread of serum hepatitis or H.A.A. positive hepatitis by route other than needle injection.
D000328:Adult; D002648:Child; D005243:Feces / Q000382:microbiology; D005260:Female; D006509:Hepatitis B / Q000635:transmission*; D006511:Hepatitis B Antigens; D006801:Humans; D007267:Injections; D008297:Male
D006511:Hepatitis B Antigens