Between March 1993 and March 1995, volunteers at 40 Harare factories were interviewed regarding sociodemographic characteristics and behavior; HIV serostatus was also determined. Among 2,691 men enrolled, HIV prevalence was 19.4%. Prevalence rose 2-fold with each year of age in young men (< 23 years). In a multivariate logistic model that included sociodemographic and behavioral variables, compared with those between 25 and 44 years, both younger men (OR = 0.51) and older men (OR = 0.49) were less likely to be HIV positive. In addition, marriage (OR = 2.01), history of sexually transmitted disease (STD) (genital ulcer, OR = 4.93, urethral discharge OR = 1.75), multiple partners (OR = 1.58), cash payment for sex (OR = 2.55) and condom use (OR = 1.35) were all independent risk factors for HIV infection. Home ownership conferred lower risk. Self-reported condom use was seen as a marker of correct personal risk assessment men who used condoms reported more risk behavior and had a higher prevalence of HIV, either because condom use was not consistent or because infection occurred prior to adoption of condoms. This study confirms established risk factors in a general population sample not selected for high risk of HIV infection. It suggests rapid acquisition of infection among young men and the importance of marriage (and separation of spouses) as correlates of HIV infection.

Dendritic cell-specific intracellular adhesion molecule-3-grabbing nonintegrin (DC-SIGN) and DC-SIGNR are C-type lectins that serve both as cell adhesion and pathogen recognition receptors. Because of the essential role of the these molecules in the immune response, the implication of their alleles in human disease states, and the possible genetic variation at these loci among ethnically diverse populations, we undertook a study to analyze the full extent of DC-SIGN and DC-SIGNR polymorphisms in Caucasian Canadian and indigenous African populations. We report several novel nucleotide variants within regulatory 5'- and 3'-untranslated regions of the genes that could affect their transcription and translation. There were significant differences in the distribution of DC-SIGN and DC-SIGNR alleles among African and non-African populations. Finally, our study clearly demonstrates that Africans show greater genetic diversity at these two closely-related immune loci than observed in other major population groups. The differences may reflect evolutionary pressures generated by environmental factors, such as prevalent pathogens in these geographically distinct regions. Further studies will be needed to determine the net impact of DC-SIGN and DC-SIGNR genetic variants on the expression, translation, and function of the proteins and to understand how these functional polymorphisms may affect immune responses or immune escape.

Heterosexual transmission of HIV-1 is widespread in Southern Africa. Heteroduplex mobility assays (HMA) and phylogenetic analyses of V3-V5 envelope (env) gene sequences demonstrate that subtype C predominates in Zimbabwe. To elucidate factors contributing to the epidemic in Zimbabwe, clinical and virologic characteristics of recently acquired subtype C HIV-1 infection among 21 men and 1 woman were determined. In 12 of 19 men providing clinical histories, a sexually transmitted infection preceded serologic evidence of HIV-1, and 14 of 19 men complained of rash or fever before seroconversion. Quantitative p24 antigen levels, reverse transcriptase activity, and HIV RNA levels of 22 viral isolates correlated with in vitro infectivity in peripheral blood mononuclear cells (p < .05). Biologic phenotype assessed in MT-2 cells demonstrated that 3 of 22 isolates (14%) were syncytia inducing (SI) and the remaining 19 nonsyncytium inducing (NSI). Early growth of virus in culture was associated with increased plasma HIV RNA levels, decreased CD4 cell levels, and SI virus. Recent subtype C HIV-1 infection through heterosexual transmission in Zimbabwe demonstrated clinical and virologic features consistent with reports of seroconversion to subtype B viruses.

In a background of very high prevalence of human immunodeficiency virus (HIV) infection among women of childbearing age and the increasing demand for treatment to prevent mother-to-child transmission, we investigated the desire for a future pregnancy among women in Zimbabwe in relation to (1) self-perceived risk of HIV infection, (2) child mortality, and (3) spontaneous abortion. A random cross-sectional sample of 2250 ever-married women aged 15-49 years was selected from 6,828 households in rural and urban Zimbabwe. The sample was representative of the geographic distribution of women. One eligible subject was selected per household for a structured interview on factors associated with the desire for future pregnancy. Overall, 54% of the participants desired to get pregnant in future; 55% perceived themselves at high risk for HIV infection; 6% reported the death of at least one child less than the age of 5 years in the last 5 years; and 12% reported at least one spontaneous abortion in the last 5 years. In multiple logistic regression analysis, reporting at least one child's death (OR = 1.77; 95% CI 1.13-2.78) and at least one spontaneous abortion in the last 5 years (OR = 1.81; 95% CI 1.08-3.04) were significantly associated with a higher desire to get pregnant; however, high self-perceived risk for HIV infection was not (OR = 0.85; 95% CI 0.67-1.09). High self-perceived risk for infection with HIV was not associated with a lower desire for a future pregnancy among women in Zimbabwe in a high-prevalence area. In fact, our data suggest an increased desire for future pregnancy to replace childhood deaths or spontaneous abortions that may result from HIV infection. Voluntary HIV testing services are challenged with balancing counseling messages on the strong desire for children, the risk of mother-to-child transmission, and poor fetal outcomes. Further research is needed to explore utilitarian-economic, social, and psychological values attributed to children by women and their partners. The involvement of men as partners in childbearing should be explored, as their desire for children may be the primary barrier to protective behavior change among women.

We explored contraceptive use among 45 women who inject drugs in Coastal Kenya. Overall, 29% were using contraceptives, motivated by a fear of unplanned pregnancy, a desire to shield children from the difficulties of drug use, the need to prevent HIV and other sexually transmitted infections, encouragement from health providers and outreach workers, or because they had achieved the desired number of children. However, 69% were not using contraceptives. Barriers to use included: current pregnancy intentions, perceived infertility due to drug induced-amenorrhea, side-effects, intimate partners' influence, lack of information, complex healthcare appointments, and transport costs. Rights-based integration of sexual and reproductive health into harm reduction services for women who inject drugs is required to minimize unmet contraception needs.