Hepatitis B in the non‐residential mentally handicapped population

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Abstract
This study describes seroprevalence and risk factors for hepatitis B in seven centres caring for non-residential mentally handicapped individuals. Overall, 11% were hepatitis B marker seropositive and 4% had the hepatitis B surface antigen (HBsAg). Male sex and increasing age were associated with seropositive status, and Down's syndrome was associated with the presence of HBsAg. Immediate family members of those with hepatitis B markers were screened and 22% had evidence of hepatitis B markers. Forty-one family members were identified when the mentally handicapped individual was HBsAg positive and of these 13 (32%) were seropositive. This study demonstrates that hepatitis B is a problem for the non-residential mentally handicapped population and confirms the risk of infection to their immediate families.