Socioeconomic obstacles to HIV prevention and treatment in developing countries: the roles of the International Monetary Fund and the World Bank

Introduction to the special issue: Applying a Caribbean perspective to an analysis of HIV/AIDS

This introduction presents a special issue of Global Public Health with a collection of articles that offer multidisciplinary perspectives on HIV/AIDS in the Caribbean. Since the 1990s, poverty, marginalisation, and social stigma have been strong foci of much social science research on HIV/AIDS in the region. These three interrelated phenomena have been offered as explanatory factors contributing to the high prevalence of cases observed in this region. Contributors to this special issue take these emphases in new directions, asking multi-level questions that require unique combinations of epidemiological, social scientific, theoretical, and policy-oriented perspectives and methodologies. Together, they identify several topical areas that intend to create dialogue across disciplines and dialectics, with the fundamental principle that the factors relevant to HIV/AIDS are broad and require intersectional lenses. The articles in this issue offer multi-level interventions into HIV/AIDS in the region, from the varied social circumstances that shape heightened risk factors to patient adherence programmes, with emphases on structural, social, and policy-level approaches. Collectively, this special issue establishes the importance of transdisciplinary approaches to HIV/AIDS that are macro-level in scope, but simultaneously attend to how large-scale dynamics are inflected in situated contexts and histories.

Globalization and women's HIV

Women's HIV has been a significant issue for decades. While economic integration has increased, little research has investigated the effects of globalization on women's HIV rate. This study argues that trade and FDI have differently affected women's HIV: While larger volume of trade has had the effect of decreasing female labor participation, thus increasing women's HIV rate, greater FDI inflows have worked to increase female labor participation, thereby decreasing women's HIV rate according to pooled time-series cross-sectional data of 89 developing countries. These findings suggest that globalization has both negative and positive effects on women's economic status and their health and that more research should be conducted into how economic integration affects marginalized populations such as children or people with low incomes.

Labor migration, externalities and ethics: theorizing the meso-level determinants of HIV vulnerability

This paper discusses labor migration as an example of how focusing on the meso-level highlights the social processes through which structural factors produce HIV risk. Situating that argument in relation to existing work on economic organization and HIV risk as well as research on labor migration and HIV vulnerabilities, the paper demonstrates how analyzing the processes through which labor migration creates vulnerability can shift attention away from the proximate behavioral determinants of HIV risk and toward the community and policy levels. Further, it presents the concepts of externalities and the ethics of consumption, which underline how both producers and consumers benefit from low-waged migrant labor, and thus are responsible for the externalization of HIV risk characteristic of supply chains that rely on migrant labor. These concepts point to strategies through which researchers and advocates could press the public and private sectors to improve the conditions in which migrants live and work, with implications for HIV as well as other health outcomes.

New toxics, new poverty: a social understanding of the freebase cocaine/Paco in Buenos Aires, Argentina

Included within the field of research on changes in drug use patterns and vulnerability are conditions of emergency related to economic crisis, wars, and political conflict. This study addresses the complex connections between the rapid propagation of freebase cocaine (FBC)-locally known as "pasta base" or "Paco" in Argentina and the normalization of the consequences of Argentina's 2001-2002 political-economic crisis. On the basis of the results of an ethnographic study carried out in three neighborhoods of the Greater Buenos Aires area between 2001 and 2005, this article aims to analyze how changes in the material and social living conditions are interrelated with the high toxicity of FBC/Paco and engender the emerging compulsion of its consumption and deterioration to the bodies, subjectivities, and social activities of active drug users from these shantytowns. By analyzing the changes in transactions directly or indirectly involving drugs-specifically those ranging from cocaine to FBC/Paco-we can argue how structural poverty, "new poverty," is not only associated with the expansion of FBC/Paco but is also shaped by its use, modes of consumption, associated health problems, and sufferings.

Anthropological Perspectives on Structural Adjustment and Public Health

Thirty years since its first public use in 1980, the phrase structural adjustment remains obscure for many anthropologists and public health workers. However, structural adjustment programs (SAPs) are the practical tools used by international financial institutions (IFIs) such as the International Monetary Fund (IMF) and the World Bank to promote the market fundamentalism that constitutes the core of neoliberalism. A robust debate continues on the impact of SAPs on national economies and public health. But the stories that anthropologists tell from the field overwhelmingly speak to a new intensity of immiseration produced by adjustment programs that have undermined public sector services for the poor. This review provides a brief history of structural adjustment, and then presents anthropological analyses of adjustment and public health. The first section reviews studies of health services and the second section examines literature that assesses broader social determinants of health influenced by adjustment.

The Impact of the International Monetary Fund's Macroeconomic Policies on the Aids Pandemic

Expansion of funding for HIV/AIDS, especially treatment, is under attack over concerns about cost effectiveness and financial constraints. The International Monetary Fund is deeply implicated in the history of the AIDS pandemic, the underlying weakness of health systems, and the ideology of constrained resources that underlies most attacks on AIDS funding. The IMF imposed structural violence on developing countries in the 1980s and 1990s through neoliberal and macroeconomic reforms that intensified individual and communal vulnerability to infection and dismantled already weak health systems. This same macroeconomic fundamentalism has recently been repackaged and renamed. IMF fundamentalist policies continue to prioritize low inflation, constricted government spending, robust foreign currency reserves, and prompt repayment of debt at the expense of investments in health and more expansionary, pro-growth and job-creation policies. Several recent surveys have concluded that the IMF reluctantly relaxed overly restrictive policy prescriptions in response to the global economic crisis, but this relaxation was temporary at best and only extended to countries previously acceding to IMF orthodoxy. AIDS activists are campaigning for billions of dollars to fulfill the promise of universal access. If IMF pressures persist, developing countries will continue to undermine the additionality of donor health financing by substituting donor for domestic financing, refusing to invest in recurrent costs for medicines and health workers, and neglecting needed investments in health infrastructure and health system strengthening.

The International Monetary Fund's effects on global health: before and after the 2008 financial crisis

In April 2009, the G20 countries committed US $750 billion to the International Monetary Fund (IMF), which has assumed a central role in global economic management. The IMF provides loans to financially ailing countries, but with strict conditions, typically involving a mix of privatization, liberalization, and fiscal austerity programs. These loan conditions have been extremely controversial. In principle, they are designed to help countries balance their books. In practice, they often translate into reductions in social spending, including spending on public health and health care delivery. As more countries are being exposed to IMF policies, there is a need to establish what we know and do not know about the IMF's effects on global health. This article introduces a series in which contributors review the evidence on the relationship between the IMF and public health and discuss potential ways to improve the Fund's effects on health. While more evidence is needed for some regions, there is sufficient evidence to indicate that IMF programs have been significantly associated with weakened health care systems, reduced effectiveness of health-focused development aid, and impeded efforts to control tobacco, infectious diseases, and child and maternal mortality. Reforms are urgently needed to prevent the current wave of IMF programs from further undermining public health in financially ailing countries and limiting progress toward the health Millennium Development Goals.

Behavioral mechanisms in HIV epidemiology and prevention: past, present, and future roles

In the 1980s, behavioral variations across geographically and socially defined populations were the central focus of AIDS research, and behavior change was seen as the primary means of controlling HIV epidemics. Today, biological mechanisms--especially other sexually transmitted infections, antiretroviral therapy, and male circumcision--predominate in HIV epidemiology and prevention. We describe several reasons for this shift in emphasis. Although the shift is understandable, we argue for a sustained focus on behavioral mechanisms in HIV research in order to realize the theoretical promise of interventions targeting the biological aspects of HIV risk. We also provide evidence to suggest that large reductions in HIV prevalence may be accomplished by small changes in behavior. Moreover, we contend that behavioral mechanisms will find their proper place in HIV epidemiology and prevention only when investigators adopt a conceptual model that treats prevalence as a determinant as well as an outcome of behavior and that explicitly recognizes the dynamic interdependence between behavior and other epidemiological and demographic parameters.

Harm reduction policies in Argentina: a critical view

The concept of 'harm' underpinning current drug harm reduction policies is most often limited to viral infections and other health consequences for drug users. This paper analyses harm reduction policies in Argentina, with the purpose of challenging and extending this narrow conception of harm to encompass all harms inflicted on drug users, in a context of criminalization of drug use and poverty. Faced with a steep rise in poverty, rapid changes in drug use practices, the quality and prices of drugs, and patterns of morbidity and mortality, Argentina has implemented harm reduction policies specifically for drug users who mostly live in the Greater Buenos Aires impoverished areas. These changes, as well as the Latin American tradition of social and health policies that focus on the collective, subjective, and political-economic aspects of harm, highlight some tensions between the individualistic, public health model structured in the North and its application in Argentina.

International Monetary Fund programs and tuberculosis outcomes in post-communist countries

BACKGROUND

Previous studies have indicated that International Monetary Fund (IMF) economic programs have influenced health-care infrastructure in recipient countries. The post-communist Eastern European and former Soviet Union countries experienced relatively similar political and economic changes over the past two decades, and participated in IMF programs of varying size and duration. We empirically examine how IMF programs related to changes in tuberculosis incidence, prevalence, and mortality rates among these countries.

METHODS AND FINDINGS

We performed multivariate regression of two decades of tuberculosis incidence, prevalence, and mortality data against variables potentially influencing tuberculosis program outcomes in 21 post-communist countries for which comparative data are available. After correcting for confounding variables, as well as potential detection, selection, and ecological biases, we observed that participating in an IMF program was associated with increased tuberculosis incidence, prevalence, and mortality rates by 13.9%, 13.2%, and 16.6%, respectively. Each additional year of participation in an IMF program was associated with increased tuberculosis mortality rates by 4.1%, and each 1% increase in IMF lending was associated with increased tuberculosis mortality rates by 0.9%. On the other hand, we estimated a decrease in tuberculosis mortality rates of 30.7% (95% confidence interval, 18.3% to 49.5%) associated with exiting the IMF programs. IMF lending did not appear to be a response to worsened health outcomes; rather, it appeared to be a precipitant of such outcomes (Granger- and Sims-causality tests), even after controlling for potential political, socioeconomic, demographic, and health-related confounders. In contrast, non-IMF lending programs were connected with decreased tuberculosis mortality rates (-7.6%, 95% confidence interval, -1.0% to -14.1%). The associations observed between tuberculosis mortality and IMF programs were similar to those observed when evaluating the impact of IMF programs on tuberculosis incidence and prevalence. While IMF programs were connected with large reductions in generalized government expenditures, tuberculosis program coverage, and the number of physicians per capita, non-IMF lending programs were not significantly associated with these variables.

CONCLUSIONS

IMF economic reform programs are associated with significantly worsened tuberculosis incidence, prevalence, and mortality rates in post-communist Eastern European and former Soviet countries, independent of other political, socioeconomic, demographic, and health changes in these countries. Future research should attempt to examine how IMF programs may have related to other non-tuberculosis-related health outcomes.

Spectral analysis of HIV seropositivity among migrant workers entering Kuwait

BACKGROUND

There is paucity of published data on human immunodeficiency virus (HIV) seroprevalence among migrant workers entering Middle-East particularly Kuwait. We took advantage of the routine screening of migrants for HIV infection, upon arrival in Kuwait from the areas with high HIV prevalence, to 1) estimate the HIV seroprevalence among migrant workers entering Kuwait and to 2) ascertain if any significant time trend or changes had occurred in HIV seroprevalence among these migrants over the study period.

METHODS

The monthly aggregates of daily number of migrant workers tested and number of HIV seropositive were used to generate the monthly series of proportions of HIV seropositive (per 100,000) migrants over a period of 120 months from January 1, 1997 to December 31, 2006. We carried out spectral analysis of these time series data on monthly proportions (per 100,000) of HIV seropositive migrants.

RESULTS

Overall HIV seroprevalence (per 100,000) among the migrants was 21 (494/2328582) (95% CI: 19 -23), ranging from 11 (95% CI: 8 - 16) in 2003 to 31 (95% CI: 24 -41) in 1998. There was no discernable pattern in the year-specific proportions of HIV seropositive migrants up to 2003; in subsequent years there was a slight but consistent increase in the proportions of HIV seropositive migrants. However, the Mann-Kendall test showed non-significant (P = 0.741) trend in de-seasonalized data series of proportions of HIV seropositive migrants. The spectral density had a statistically significant (P = 0.03) peak located at a frequency (radians) 2.4, which corresponds to a regular cycle of three-month duration in this study. Auto-correlation function did not show any significant seasonality (correlation coefficient at lag 12 = - 0.025, P = 0.575).

CONCLUSION

During the study period, overall a low HIV seroprevalence (0.021%) was recorded. Towards the end of the study, a slight but non-significant upward trend in the proportions of HIV seropositive migrants was recorded. A significant rhythmic cycle of three-month duration was observed in the proportions of HIV seropositive migrants. The underlying factors for a consistent upward trend towards the end of study period and for a significant quarterly cycle in the proportions of HIV seropositive migrants merit further investigations.

Bilateral and Multilateral Financing of HIV/AIDS Programs: The World Bank, the International Monetary Fund, the Global Fund, Bilateral Donors and the Private Sector

This chapter examines the operations of the World Bank (a multilateral development institution), the International Monetary Fund (a multilateral financial institution) and the Global Fund to Fight AIDS, Tuberculosis and Malaria (a multilateral fundraising and financing institution) to fight HIV/AIDS. We also examine the role of bilateral donors and the private sector in financing the fight against HIV/AIDS. We examine the relationships among bilateral donors and international organizations, what distinguishes their roles in the global HIV/AIDS pandemic and the extent to which their activities overlap. In addition, we consider how funding strategies and parameters may affect the effectiveness of AIDS funding in preventing transmission and providing treatment.

Sexually transmissible infections among female sex workers: an international review with an emphasis on hard-to-access populations

Background: Women who work commercially in sex work (female sex workers [FSW]) are considered a high-risk group for sexually transmissible infections (STI), yet the level of reported pathogens varies in studies around the world. This study reviewed STI rates reported in 42 studies of FSW around the world published between 1995 and 2006 and analysed the trends and types of populations surveyed, emphasising difficult to access FSW populations. Methods:Studies were retrieved by PUBMED and other search engines and were included if two or more pathogens were studied and valid laboratory methods were reported. Results: The five most commonly assessed pathogens were Neisseria gonorrhea (prevalence 0.5–41.3), Chlamydia trachomatis (0.61–46.2), Treponema pallidum (syphilis; 1.5–60.5), HIV (0–76.6), and Trichomonas vaginalis (trichmoniasis; 0.11–51.0). Neisseria gonorrhea and C. trachomatis were the most commonly tested pathogens and high prevalence levels were found in diverse areas of the world. HIV was highly prevalent mostly in African countries. Although human papillomavirus infection was surveyed in few studies, prevalence rates were very high and its aetiological role in cervical cancer warrant its inclusion in future FSW monitoring. Hard-to-access FSW groups tended to have higher rates of STI. Conclusions: The five most commonly detected pathogens correspond to those that are highly prevalent in the general population, however there is an urgent need to develop rapid testing diagnostics for all five pathogens to increase prevention and treatment, especially in outreach programs to the most vulnerable groups among FSW.

Contextualising AIDS and human development: Long-term illness and death among adults in labouring low-caste groups in India

This study compared evidence from two low caste labouring communities in India: a relatively modernized urban group and a rural group in a backward region. It explored their levels of ill health, their capacities to respond to adult illness and the support they received. In each region, a baseline survey of approximately 1,000 households provided background quantitative evidence with qualitative evidence was collected from about 55 families. HIV infection and AIDS deaths were found to occur in the 'less poor' segments of the study group in both regions. In keeping with the official data, they formed a small proportion of the overall mortality and morbidity in this group. Stigma and discrimination were found to be low but fear of stigma was high, generated by the medical response to AIDS and used opportunistically for personal gains. The study provides insights into the structural determinants of health and coping mechanisms in these communities. The best conditions for a healthy life were found in the group that had a rooted community setting, collective political power, migrant economic support and improved working conditions--the less poor rural group. While improved economic status was associated with better health status, this relationship was stronger when combined with the presence of improved working conditions, with social cohesion at family and community levels and with political power as indicated by levels of organized collective representation and identity formation in workplace, local- and state-level politics. However, the traditional forms of social cohesion are under stress and new forms, moderated by commercial relations, are proving inadequate to meet major household shocks, like adult mortality.

Political economy, labor migration, and the AIDS epidemic in rural Malawi

This study examines how livelihood struggles push rural Malawians into AIDS-risky sexual behavior. The study involved in-depth interviews of 59 household guardians, four key informant group discussions, and after work observations and interviews of 19 people working, traveling, or running businesses. Findings reveal that circular migration has become a livelihood practice for adults aged 20-49 in rural Malawi through which they contract AIDS. This migration springs from the fragile political economy brought about by development strategies that did not build up and deploy human capital in rural communities. Doing so would advance local economic enterprise that would reduce prime age adults' involvement in circular migration and improve their opportunities for self-determination thus increasing the adoption of AIDS prevention interventions in rural Malawi. The abstinence, being faithful, and condom use (ABC) interventions in controlling AIDS need to be complemented by developing human capital and using it to unlock the economic growth and problem-solving potential in rural communities.

AIDS and "shared sovereignty" in Tanzania from 1987 to 2000: a case study

After more than 15 years of foreign assistance to support HIV/AIDS prevention in Sub-Saharan Africa, HIV rates in the sub-continent remain high with only a few examples of reduced HIV incidence. This case study used the frame of "shared sovereignty" between nation-states and official development assistance agencies to analyze 13 years of technical assistance for HIV/AIDS programs in Tanzania from 1987 to 2000. The study draws on 21 key informant interviews and a systematic review of key program documents from the National AIDS Control Programme (NACP) and 14 other international agencies. Applying Jamison et al.'s (Lancet 351 (1998) 514) shared sovereignty framework, the analysis focused on fulfilled shared functions in moving Tanzania's NACP from dependence to independence. The analysis revealed an uneven and inconsistent level of technical assistance to the NACP with a rotation of multilateral and bilateral donors over the period of study. The Tanzanian government was often ambivalent toward agencies providing assistance towards its HIV/AIDS programs and toward its own NACP. Results are discussed in terms of implications for future strategic planning to mitigate the effects of HIV/AIDS. Determining roles, shared accountability and responsibility in a shared sovereignty framework remain a challenge in the governance of HIV/AIDS programs in Tanzania.

Risks, stigma and Honduran Garı́funa conceptions of HIV/AIDS

The HIV/AIDS epidemic along Honduras' north coast has intensified in recent years and become particularly severe in Garífuna communities. Based on a qualitative study in the community of Las Espinas and comparison with results from an earlier knowledge, attitudes, beliefs and practices survey, this article explores Garífuna ideas about the disease, focusing on issues of risk perception and stigma. Using correspondence analysis with data from systematic elicitation techniques we abstract the local schema of HIV/AIDS, showing how accurate knowledge of transmission co-occurs with cultural judgments about safe partners, increasing chances for infection. Despite broad familiarity with the disease in the community it remains highly stigmatized, suggesting continuing problems in coming to terms with the epidemic as treatment becomes more widely available in Honduras. Questions of power, sexuality and affective expectations about partners complicate the situation for women hoping to prevent infection. Given the broader risk environment characterized by labor migration and transnational movement, vital interventions and educational efforts in Garífuna communities will need to be complemented with prevention efforts in contexts where men make a living.

Risk factors for incident HIV infection among anonymous HIV testing site clients in Santos, Brazil: 1996-1999

OBJECTIVES

To determine temporal trends in HIV infection and risk factors among persons seeking anonymous HIV testing in Santos, Brazil.

METHODS

Data and sera from persons testing for HIV from 1996 to 1999 were used. Exposures were abstracted from HIV testing risk assessments. Stored HIV-positive sera were tested to identify recently acquired HIV infection using a serologic testing algorithm for detecting recent HIV seroconversion (STARHS). Independent associations between exposures and recently acquired HIV infection were determined using multivariate analyses.

RESULTS

Overall, estimated HIV incidence was 2.0% (95% CI: 1.1-3.5) for the 4-year period: 1.2% (95% CI: 0.5-2.6) in women and 2.7% (95% CI: 1.3-5.0) in men. Incidence increased among women but remained stable among men. Exposures independently associated with incident infection included a history of sex work (OR= 5.4, 95% CI: 1.5-18.7), concurrent syphilis infection (OR =4.1, 95% CI: 1.4-11.9), anal sex (OR = 3.0, 95% CI: 1.3-7.1), and having an HIV-positive sexual partner (OR= 1.4, 95% CI: 1.1-1.9).

CONCLUSIONS

This study further demonstrates the public health utility of using the STARHS for the assessment of emerging trends in the HIV epidemic. Results from this study will help to target appropriate prevention strategies directed toward at-risk populations in Santos.

The global HIV/AIDS pandemic, structural inequalities, and the politics of international health

In spite of recent advances in treatment and care available in most developed countries, the HIV/AIDS pandemic continues to spread throughout the developing world. Structural inequalities continue to fuel the epidemic in all societies, and HIV infection has increasingly been concentrated in the poorest, most marginalized sectors of society in all countries. The relationship between HIV/AIDS and social and economic development has therefore become a central point in policy discussions about the most effective responses to the epidemic. Important progress has been made in recent United Nations initiatives. Maintaining long-term commitment to initiatives such as the Global Fund to Fight AIDS, Tuberculosis and Malaria is especially important in the wake of September 11 and ensuing events, which threaten to redirect necessary resources to seemingly more urgent security concerns.

Voluntary counseling and testing for couples: a high-leverage intervention for HIV/AIDS prevention in sub-Saharan Africa

Most HIV infections in sub-Saharan Africa occur during heterosexual intercourse between persons in couple relationships. Women who are infected by HIV seropositive partners risk infecting their infants in turn. Despite their salience as social contexts for sexual activity and HIV infection, couple relationships have not been given adequate attention by social/behavioral research in sub-Saharan Africa. Increasingly studies point to the value of voluntary HIV counseling and testing (VCT) as a HIV prevention tool. Studies in Africa frequently report that VCT is associated with reduced risk behaviors and lower rates of seroconversion among HIV serodiscordant couples. Many of these studies point out that VCT has considerable potential for HIV prevention among other heterosexual couples, and recommend that VCT for couples be practiced more widely in Africa. However, follow-up in the area of VCT for couples has been extremely limited. Thus, current understandings from social/behavioral research on how couples in sub-Saharan Africa manage HIV risks as well as HIV prevention interventions to support couples' HIV prevention efforts have remained underdeveloped. It appears that important opportunities are being missed for preventing HIV infection, be it by heterosexual transmission or mother-to-child HIV transmission by mothers who have been infected by their partners. Based on an overview of documentation on VCT in sub-Saharan Africa, this paper proposes that increased attention to couples-focused VCT provides a high-leverage HIV prevention intervention for African countries. The second half of the paper indicates areas where VCT needs to be strengthened, particularly with respect to couples. It also identifies areas where applied social/behavioral research is needed to improve knowledge about how couples in sub-Saharan Africa deal with the risks of HIV infection.

Structural barriers and facilitators in HIV prevention: a review of international research

OBJECTIVES

This article provides an overview of a growing body of international research focusing on the structural and environmental factors that shape the spread of the HIV/AIDS epidemic, and create barriers and facilitators in relation to HIV-prevention programs. OVERVIEW OF STRUCTURAL-FACTORS LITERATURE: Most of the research on structural and environmental factors can be grouped into a small number of analytically distinct but interconnected categories: economic (under)development and poverty; mobility, including migration, seasonal work, and social disruption due to war and political instability; and gender inequalities. An additional focus in research on structural and environmental factors has been on the effects of particular governmental and intergovernmental policies in increasing or diminishing HIV vulnerability and transmission.

INTERVENTIONS

A smaller subset of the research on structural factors describes and/or evaluates specific interventions in detail. Approaches that have received significant attention include targeted interventions developed for heterosexual women, female commercial sex workers, male truck drivers, and men who have sex with men.

CONCLUSIONS

The structural and environmental factors literature offers important insights and reveals a number of productive intervention strategies that might be explored in both resource-rich and -poor settings. However, new methodologies are required to document and evaluate the effects of the structural interventions, which by their very nature involve large-scale elements that cannot be easily controlled by experimental or quasi-experimental research designs. Innovative, interdisciplinary approaches are needed that can move beyond the limited successes of traditional behavioral interventions and explicitly attempt to achieve broader social and structural change.

Structural and environmental HIV prevention for gay and bisexual men

HIV prevention efforts for gay and bisexual men in the United States began as community-mobilizing efforts, but have drifted towards focusing more on the individual. Given lowering prevalence and incidence, it is unreasonable to expect continued community support for high levels of prevention activity. Structural and environmental interventions present one useful, complementary set of alternatives to support prevention efforts. This paper reviews the gay community's relationship with these interventions, including its intensely debated approaches to reducing HIV transmission within bathhouses. The implications for HIV prevention for gay men of larger societal factors, including economic development and economic motivation, migration, and legislation, are then considered. Individual rights, community and public-health interests must be given particularly cautious consideration when designing and implementing structural and environmental interventions.

AIDS e pauperização: principais conceitos e evidências empíricas

O artigo discute as estratégias metodológicas que vêm sendo usadas na análise das inter-relações entre a vulnerabilidade ao HIV/AIDS e as desigualdades sociais, o preconceito e a marginalização, ressaltando-se as dificuldades metodológicas e as estratégias alternativas de investigação encontradas. Os principais achados da literatura internacional e brasileira foram revistos, enfatizando-se os temas: dimensões econômicas e macropolíticas da difusão do HIV/ AIDS; papel do consumo e da política de drogas; desigualdade e preconceito de gênero; desigualdade e preconceito racial/origem étnica; interação com as demais infecções sexualmente transmissíveis e sua relação com a pobreza; padrões de assistência à saúde e HIV/AIDS, em especial, acesso a anti-retrovirais; e violação dos direitos humanos. Apesar da restrita produção acadêmica brasileira e dos dilemas metodológicos envolvidos no exame das inter-relações entre variáveis psicossociais, culturais, sócio-políticas e vulnerabilidade ao HIV/AIDS, tais temas devem ser investigados em detalhe - considerando especificidades sociais e culturais do Brasil - e beneficiados pelas novas estratégias de pesquisa.

KRD. Pobreza e HIV/AIDS: aspectos antropológicos e sociológicos

A partir da perspectiva das várias epidemias de HIV/AIDS que coexistem em mesmo espaço, bem como dos dados epidemiológicos do Brasil, acredita-se serem observáveis as variações já descritas alhures - feminilização, pauperização, juvenilização e interiorização - como resultado das profundas desigualdades da sociedade brasileira. Foram examinadas as contribuições de três vertentes de análise dos aspectos sócio-econômicos da AIDS: 1) pesquisas e teorias sociológicas a respeito do impacto da reestruturação econômica e transformação social global recentes e sua relação com a saúde pública; 2) literatura transcultural e transnacional em antropologia e sociologia dedicada aos fatores estruturais que conformam o curso da epidemia em diferentes conjunturas; e 3) corpo de pesquisas antropológicas e sociológicas concernentes aos efeitos sinérgicos do HIV/AIDS, exclusão social, e problemas sociais associados nos bolsões de extrema pobreza encontrados nas grandes cidades de países centrais. Conclui-se que as políticas de prevenção do HIV/AIDS devem abordar, de forma integrada, as várias dimensões que determinam as diferenciadas vulnerabilidades à epidemia, dependendo, portanto, de transformações sociais substantivas.

Encompassing treatment with prevention: the path for a lasting control of tuberculosis

Tuberculosis is an important cause of death, mainly in the less developed countries. Thus far the strategy for its control had relied on the diagnosis of sick individuals and provision of chemotherapy. However, this strategy is problematic for several reasons: poor education about the disease and the low income of people with tuberculosis are important barriers for them to have access to early diagnosis and to keep adherence to treatment; provision of 'preventive therapy' to the enormous pool of people infected with tuberculosis is not feasible in less developed countries; and finally, long-term political commitment with the strategy is unlikely. Several facts indicate that tuberculosis patterns in different populations are shaped by biological, behavioral and socio-economic factors. This paper argues that a lasting control of tuberculosis requires a strategy based on a broader model of causality, which takes account of all these three causal factors.

Sexually transmitted infections among sex workers in KwaZulu-Natal, South Africa

OBJECTIVE

The purpose of this study was to investigate the prevalence of sexually transmitted infections, including human immunodeficiency virus (HIV), among female sex workers operating at truckstops in the KwaZulu-Natal midlands of South Africa.

METHODS

A total of 145 sex workers were recruited from August 1996 to March 1997. A gynecologic examination, including a speculum examination, was performed. Investigations were performed to identify gonorrhea, syphilis, chlamydia (infection), candidiasis, trichomoniasis, bacterial vaginosis, and HIV infection.

RESULTS

A total of 50.3% of the sex workers were HIV positive. Infection with Trichomonas vaginalis was present in 41.3% of the women, Candida albicans in 40.6%, Neisseria gonorrheae in 14.3%, and Chlamydia trachomatis in 16.4%. Bacterial vaginosis was present in 71% and active syphilis in 42.1% of the women.

CONCLUSION

The high prevalence of sexually transmitted infections, including HIV, clearly highlights the urgent need for interventions. In addition to empowering women with methods they can use and control to reduce their risk of infection, an effective approach to control of sexually transmitted infections also needs to recognize the role of the clients, such as truck drivers, so that they also are targeted for interventions.

Decreased incidence of sexually transmitted diseases among trucking company workers in Kenya: results of a behavioural risk-reduction programme

OBJECTIVE

To establish a cohort of high-risk individuals suitable for HIV-prevention trials, and to measure changes in sexual behaviour and sexually transmitted disease (STD) incidence after a behavioural intervention.

DESIGN

Prospective cohort study in trucking company depots in Mombasa, Kenya.

PARTICIPANTS

A total of 556 male HIV-seronegative employees of trucking companies.

INTERVENTIONS

HIV serological testing, individual counselling, condom promotion, STD diagnosis and management.

MAIN OUTCOME MEASURES

Sexual risk behaviour and symptomatic STD incidence.

RESULTS

Using time-trend modelling, significant declines in self-reported high-risk sexual behaviour were demonstrated during a 1-year follow-up. The percentage of men reporting any extramarital sex during the 3-month period prior to a follow-up visit decreased from 49% durig the first quarter of follow-up to 36% during the last quarter (P < 0.001). The decline in reported female sex worker contact was from 12% to 6% (P = 0.001). Approximately 30% of men reported consistent condom use during extramarital sex and this percentage remained unchanged during the study period. The incidence of STD declined from 34 per 100 person years (PY) during the first quarter to 10 per 100 PY during the last quarter (P = 0.001). Significant reductions in gonorrhoea (15 to five cases per 100 PY, P = 0.04), non-gonococcal urethritis (10 to two cases per 100 PY, P = 0.05), and genital ulcer disease (nine to two cases per 100 PY, P = 0.02) were observed.

CONCLUSIONS

Among truck company workers who participated in a cohort study in Mombasa, Kenya, there was a significant decrease in sex with high-risk partners, but no change in condom use. The change in heterosexual risk behaviour was accompanied by a significant decrease in incidence of gonorrhoea, non-gonococcal urethritis, and genital ulcer disease.

Sex workers and the control of sexually transmitted disease

OBJECTIVES

To describe and assess measures to control sexually transmitted diseases (STDs) among sex workers and their partners.

METHODS

A review of medical, historical and social literature, focusing on selected cases.

RESULTS

Measures to control disease in sex workers today are often prompted by concerns about HIV transmission. However, the literature shows that prostitution varies from one place and time to another, together with the risk of sexually transmitted disease. A broad social definition of prostitution rather than a narrow reference to levels of sexual activity is important for effective disease control, as an understanding of the relation between social disadvantage and sexual activity enables the provision of occupational services that sex workers actually want and use. Social prejudice and legal sanctions cause some sex workers and their partners to avoid even the most appropriate and accessible specialist services. Therefore targeted programmes can only complement, and not replace, general measures to control STDs, which are developed for other social groups or the local population as a whole.

CONCLUSIONS

Sex workers and sex work differ from one place to another and so a single model for STD control is inappropriate. None the less, occupational health risks suggest a general need for specialist services. Where these do not compound the disadvantages that sex workers already suffer, medical services are likely to offer significant benefits in prevention, early diagnosis, and treatment of STDs. As the stigma of prostitution leads many people to remain invisible to services, a general health infrastructure and anti-discriminatory measures will be equally important to effective disease control.

Reframing women's risk: social inequalities and HIV infection

Social inequalities lie at the heart of risk of HIV infection among women in the United States. As of December, 1995, 71,818 US women had developed AIDS-defining diagnoses. These women have been disproportionately poor, African-American, and Latina. Their neighborhoods have been burdened by poverty, racism, crack cocaine, heroin, and violence. To explain which women are at risk and why, this article reviews the epidemiology of HIV and AIDS among women in light of four conceptual frameworks linking health and social justice: feminism, social production of disease/political economy of health, ecosocial, and human rights. The article applies these alternative theories to describe sociopolitical contexts for AIDS' emergence and spread in the United States, and reviews evidence linking inequalities of class, race/ethnicity, gender, and sexuality, as well as strategies of resistance to these inequalities, to the distribution of HIV among women.

HIV prevention in developed countries

HIV prevention in developed countries is marked by impressive successes and dismal failures. The successes point the way to what works; the failures highlight obstacles that must be overcome. Successes include important behavioural changes among gay and bisexual men, antiviral use to prevent vertical transmission, and securing the safety of the blood supply. New strategies are needed to reach the residual of individuals continuing with unsafe practices (a special hazard in high-prevalence areas); to reach young people who are beginning to engage in sexual relations and injection drug use; and to overcome political opposition to prevention strategies.

Sexually transmitted diseases control in developing countries

Sexually transmitted diseases (STDs) are a major public health problem now compounded by the advent of AIDS and HIV infection. The size of the problem represented by STDs and HIV is unknown however it is estimated that there are 333 million new cases of STD per annum and currently 15-20 million people infected worldwide with HIV. Control programmes for STDs must prevent the acquisition of STDs, their complications and sequelae and interrupt and reduce transmission. They can also reduce the incidence of HIV infection. Such programmes must place emphasis on health education, condom usage, altering health seeking behaviour and providing case management. The syndromic approach currently offers the most realistic, and cost effective, way in which to treat patients.

Social inequalities and emerging infectious diseases

Although many who study emerging infections subscribe to social-production-of-disease theories, few have examined the contribution of social inequalities to disease emergence. Yet such inequalities have powerfully sculpted not only the distribution of infectious diseases, but also the course of disease in those affected. Outbreaks of Ebola, AIDS, and tuberculosis suggest that models of disease emergence need to be dynamic, systemic, and critical. Such models--which strive to incorporate change and complexity, and are global yet alive to local variation--are critical of facile claims of causality, particularly those that scant the pathogenic roles of social inequalities. Critical perspectives on emerging infections ask how large-scale social forces influence unequally positioned individuals in increasingly interconnected populations; a critical epistemology of emerging infectious diseases asks what features of disease emergence are obscured by dominant analytic frameworks. Research questions stemming from such a reexamination of disease emergence would demand close collaboration between basic scientists, clinicians, and the social scientists and epidemiologists who adopt such perspectives.