NEIL E. REINER, M.D.; FRANKLYN N. JUDSON, M. D.; WALTER W. BOND, M.S.; DONALD P. FRANCIS, M.D.; NORMAN J. PETERSEN, S.M.
▸Requests for reprints should be addressed to Franklyn N. Judson, M.D.; Disease Control Service, 605 Bannock Street; Denver, CO 80204.
REINER N., JUDSON F., BOND W., FRANCIS D., PETERSEN N.; Asymptomatic Rectal Mucosal Lesions and Hepatitis B Surface Antigen at Sites of Sexual Contact in Homosexual Men with Persistent Hepatitis B Virus Infection: Evidence for de facto Parenteral Transmission. Ann Intern Med. 1982;96:170-173. doi: 10.7326/0003-4819-96-2-170
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Published: Ann Intern Med. 1982;96(2):170-173.
To ascertain why active and passive oral-anal and genital-anal intercourse correlate strongly with hepatitis B virus (HBV) infection in homosexual men, we studied 22 men with HBV infection for the presence of hepatitis B surface antigen (HBsAg) in gingival and anorectal mucosa, feces, and semen. Thirteen of 22 (59%) patients had asymptomatic rectal mucosal lesions consisting of punctate bleeding points. Seventy-seven percent of swabbed specimens from lesions, 62% from feces, 59% from rectal mucosa, and 50% from anal canal mucosa contained HBsAg. Sera diluted serially and tested for HBsAg by radioimmunoassay showed that men with serum titers of 105 0r greater were more likely to have HBsAg in specimens from lesions (p = 0.034), feces (p = 0.032), and normal mucosa (p = 0.001) than men with titers under 105. Asymptomatic rectal bleeding is frequent in homosexual men with persistent HBV infection. Rectal mucosa, feces, and anal canal mucosa become contaminated with HBsAg, creating a setting for de facto parenteral transmission when there is contact with oral or urethral mucosa.
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