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Incidence of AIDS cases in Spanish penal facilities through the capture-recapture method, 2000.

Three available sources of information used in the surveillance of AIDS in Spanish prisons were used to carry out a capture-recapture study. Results showed the register of AIDS cases (RCS) considerably underestimates the incidence of this disease in prisons as it covers only 50% of cases. This study highlights the need to use additional sources to the RCS to evaluate the real incidence of AIDS in prisons in Spain.