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The objective was to determine the prevalence of hepatitis B virus (HBV) infection in long-stay institutionalized mentally handicapped adults and to develop a vaccination programme for them. The study was carried out in 1994. The subjects were 171 mentally handicapped adults aged 37–76 (median age 56) with a median hospital stay of 30 years (range 6–47). Markers for infection were determined using...
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