Spread of acute type-B hepatitis in London.
D000208:Acute Disease; D003075:Coitus; D005260:Female; D006069:Gonorrhea / Q000150:complications; D006506:Hepatitis A / Q000209:etiology; D006509:Hepatitis B / Q000209:etiology*; D006716:Homosexuality; D006801:Humans; D008297:Male; D012737:Sex Factors