Acquired immunodeficiency syndrome in Rwanda.

Area of Science:

• Immunology
• Infectious Diseases
• Epidemiology

Background:

• Acquired immunodeficiency syndrome (AIDS) evaluation in central Africa.
• Kaposi's sarcoma (KS) is endemic in Kigali, Rwanda, the study location.

Purpose of the Study:

• To prospectively evaluate the presence and characteristics of AIDS in central Africa.
• To investigate potential risk factors associated with AIDS in the region.

Main Methods:

• Prospective study conducted over 4 weeks in Kigali, Rwanda.
• Diagnosis and clinical evaluation of 26 patients presenting with AIDS-related conditions.
• Assessment of T-cell defects, including cutaneous anergy and T-cell counts.

Main Results:

• 26 patients diagnosed with AIDS, including opportunistic infections and prodromal symptoms.
• All patients exhibited severe T-cell defects (decreased helper T cells, low OKT4:OKT8 ratio).
• Risk factors identified: urban living, higher income, heterosexual promiscuity (including prostitutes).
• No cases linked to homosexuality, intravenous drug abuse, or recent transfusions.

Conclusions:

• AIDS is present in central Africa as a distinct entity, likely unrelated to endemic Kaposi's sarcoma.
• Urban environment, higher socioeconomic status, and heterosexual promiscuity appear to be significant risk factors for AIDS in this African population.