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June 20, 1986

Surveillance for AIDS in a Central African City: Kinshasa, Zaire

Author Affiliations

From the Project SIDA (Drs Mann, Francis, Bosenge, and Nzilambi), Ministry of Health (Dr Ruti), the Mama Yemo Hospital (Drs Asila and Bila), and the University of Kinshasa School of Medicine (Dr Tamfum), Kinshasa, Zaire; Center for Infectious Diseases, Centers for Disease Control, Atlanta (Drs Mann, McCormick, and Curran); the National Institute of Allergy and Infectious Diseases, Bethesda, Md (Drs Francis and Quinn); and the Institute of Tropical Medicine, Antwerp, Belgium (Dr Piot).

JAMA. 1986;255(23):3255-3259. doi:10.1001/jama.1986.03370230061031

Surveillance for acquired immunodeficiency syndrome (AIDS) in Kinshasa, Zaire, was initiated in July 1984, using a modified version of the case definition developed by the Centers for Disease Control. During the first eight months, 332 patients met all clinical and laboratory criteria; surveillance information was available for 295 (89%) of these patients. Of the sera tested from these patients, 99% had antibodies to human T-cell lymphotropic virus type III/lymphadenopathy-associated virus by both enzyme-linked immunosorbent assay and Western blot procedures. The male-female case ratio was 1:1.1; the mean age of patients was 33.6 years (median, 32 years; range, 1.5 to 64 years); and men were significantly older than women (mean, 37.4 vs 30.0 years). The estimated incidence rate for adults in Kinshasa is 380 cases per 1 million people per year. Peak age-specific incidence rates for men and women occurred among the 30- to 39-year age group, although the rate for men in this age group was 24% higher than the rate for women (786 vs 601 per 1 million). A reasonable estimate of the current annual incidence of AIDS is 550 to 1,000 cases per 1 million people. Surveillance of AIDS in Zaire provides important information on transmission patterns and rates in Africa.

(JAMA 1986;255:3255-3259)