Trend in HIV prevalence among tuberculosis patients in Tanzania, 1991–1998
METHODS: Consecutive tuberculosis patients were enrolled over 6-month periods in most regions. Demographic and clinical data were collected on standard forms and a single HIV ELISA test performed. Trends in tuberculosis incidence were estimated from regional notification data.
RESULTS: Of 10 612 eligible tuberculosis patients, 44% had HIV infection, compared with 32% in the previous survey. The largest increase was observed in the youngest birth cohorts, suggesting active HIV transmission. Approximately 60% of the increase in notification rates of smear-positive tuberculosis between surveys was directly attributable to HIV infection.
CONCLUSION: The HIV epidemic has had a strong influence on tuberculosis incidence. However, since 1995, tuberculosis notification data have increased less steeply, AIDS notifications have gone down, and HIV prevalence in blood donors has not increased a great deal. Another survey among tuberculosis patients in 5 years’ time may show whether the HIV epidemic in Tanzania has reached a maximum or steady state.
Document Type: Regular Paper
Affiliations: 1: Tanzania National Tuberculosis and Leprosy Programme, National Institute for Medical Research, Muhimbili Research Station, Dar es Salaam, Tanzania 2: Tanzania National Tuberculosis and Leprosy Programme, Dar es Salaam, Tanzania 3: Centers for Disease Control and Prevention, Atlanta, Georgia, USA 4: National Institute for Medical Research, Muhimbili Research Station, Dar es Salaam, Tanzania 5: Tanzania Central Tuberculosis Reference Laboratory, Muhimbili Medical Centre, Dar es Salaam, Tanzania 6: World Health Organization, Geneva, Switzerland 7: Royal Netherlands Tuberculosis Association, The Hague, The Netherlands
Publication date: 2001-05-01
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