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An Outbreak Related to Sexual Contact

Richard A. Wright, MD

JAMA. 1975;232(7):717-721.

Abstract
Within six months, acute viral hepatitis, type B, developed in three individuals associated with a nursing home in Denver. This attack rate, 1.4 cases per 100 patients and employees, was apparently higher than the reported incidence of hepatitis B in Denver during the same period.

Parenteral inoculations could not be implicated as the means of acquiring hepatitis B. However, two of the hepatitis patients had had sexual contact within six months before their illness with an employee who was an insulindependent diabetic and a symptomatic carrier of HB_sAg. In addition, anti-HB_s antibodies were detected in his homosexual roommate.

Although the chronic carrier was a food-handler, a seroepidemiologic survey of the employee population showed no spread of HB_sAg by means of food or casual contact. Only 1 (4.6%) of 22 employees tested had anti-HB_s antibodies.

These results suggest that household and, in particular, sexual contact with a symptomatic HB_sAg carrier may be an effective nonparenteral or inapparent parenteral mode of transmitting HB_sAg.

(JAMA 232:717-721, 1975)

Author Affiliations
From the Epidemic Intelligence Service, Center for Disease Control, Colorado Department of Health, Denver.

Footnotes
Reprint requests to Colorado Department of Health, 4210 E 11th St, Denver, CO 80220 (Dr. Wright).

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