Prevalence of HIV infection and high-risk activities in Haiti.

The prevalence of antibodies to human immunodeficiency virus (HIV) was determined in the relatives, friends, and sex partners of AIDS patients in Haiti and in other unrelated Haitian population groups. Among contacts of AIDS patients, HIV seroprevalence was highest among sex partners of the opposite sex (55%) and lowest among female relatives and friends (9%) of female AIDS patients. Male relatives and friends of male AIDS patients had a seroprevalence rate of 19% and also had a history of multiple heterosexual partners and frequent contact with prostitutes.

Risk factors associated with AIDS in Haiti.

A total of 121 acquired immunodeficiency syndrome (AIDS) patients diagnosed in Haiti were studied between June 1979 and December 1983. Risk factors were identified in 65% of 34 patients evaluated in a standardized manner since July 1983 and included: bisexuality, 38%; blood transfusion, 21%; and intravenous drug abuse or a spouse with AIDS, 6%. These risk factors were reported by only 20% of the 85 patients studied between June 1979 and June 1983.

The acquired immunodeficiency syndrome in Haiti.

Two hundred twenty-nine patients in Haiti with the acquired immunodeficiency syndrome were studied between 1979 and 1984. The clinical spectrum of the syndrome in Haitians was similar in most aspects to that in patients with the disease in the United States. However, in contrast to findings in the United States, accepted risk factors (bisexuality, blood transfusions, intravenous drug abuse) were identified in only 43% of Haitian patients.

Characteristics of the acquired immunodeficiency syndrome (AIDS) in Haiti.

To identify the characteristics of the acquired immunodeficiency syndrome (AIDS) as it occurs in Haiti, we studied 61 previously healthy Haitians who had diagnoses of either Kaposi's sarcoma (15), opportunistic infections (45), or both (1) established in Haiti between June 1979 and October 1982. The first cases of Kaposi's sarcoma and opportunistic infections in Haiti were recognized in 1978-1979, a period that coincides with the earliest reports of AIDS in the United States. We do not believe that AIDS existed in Haiti before this period.