RT Journal Article SR Electronic T1 Role of sexual and non-sexual practices in the transmission of hepatitis B. JF The British Journal of Venereal Diseases JO Br J Vener Dis FD BMJ Publishing Group Ltd SP 190 OP 192 DO 10.1136/sti.53.3.190 VO 53 IS 3 A1 K S Lim A1 V T Wong A1 K W Fulford A1 R D Catterall A1 M Briggs A1 D S Dane YR 1977 UL http://sti.bmj.com/content/53/3/190.abstract AB Medical, social, and sexual histories were taken from 198 men attending a department for sexually transmitted diseases. Their blood was tested for hepatitis B surface antigen and its antibody, and also for syphilis and liver function. Infection with hepatitis B virus was found to be common among practising homosexuals and to occur much more frequently in them than in heterosexuals. Hepatitis B appeared to be transmitted sexually rather than by other means, but it was not possible in this study to link its transmission with any particular homosexual practice. However, risk of infection increased considerably with the number of sexual partners and nearly half of those with more than 40 sexual partners had been infected.