The feasibility of integrated STI prevalence and behaviour surveys in developing countries

Family Functioning and Child Behavioral Problems in Households Affected by HIV and AIDS in Kenya

HIV places acute stressors on affected children and families; especially in resource limited contexts like sub-Saharan Africa. Despite their importance, the epidemic's potential consequences for family dynamics and children's psychological health are understudied. Using a population-based sample of 2,487 caregivers and 3,423 children aged 8-14 years from the Central Province of Kenya, analyses were conducted to examine whether parental illness and loss were associated with family functioning and children's externalizing behaviors. After controlling for demographics, a significant relationship between parental illness and externalizing behaviors was found among children of both genders. Orphan status was associated with behavioral problems among only girls. Regardless of gender, children experiencing both parental loss and illness fared the worst. Family functioning measured from the perspective of both caregivers and children also had an independent and important relationship with behavioral problems. Findings suggest that psychological and behavioral health needs may be elevated in households coping with serious illness and reiterate the importance of a family-centered approach for HIV-affected children.

Risky sexual practices among men who have sex with men in Northeast Brazil: results from four sequential surveys

This paper focuses on recent trends in risky sexual practices for HIV/AIDS among men who have sex with men (MSM) in Fortaleza, Ceará State, Brazil. Four cross-sectional surveys were conducted (1995, 1998, 2002, and 2005) among MSM 14 years or older who reported oral or anal sex in the previous 12 months. Sexual practices were considered risky whenever the respondent reported unprotected receptive or insertive anal intercourse in the six months preceding the interview. Different selection techniques were used to recruit the study population: snowball (1995, 1998, 2002 - 32%); time-space sampling (2002 - 68%); and respondent-driven sampling (2005). Analyses were based on the comparison between proportions. High rates of risky sexual practices were reported in 1995 (49.9%), decreasing in 1998 (32.6%), increasing again in 2002 (51.3%), and showing the lowest level in 2005 (31.4%). Participants with more schooling increased their risky practices from 1998 to 2002, decreasing in 2005. Among individuals with medium or low schooling, risky behavior declined from 2002 to 2005. The article highlights the need for behavioral surveillance to properly address STD/HIV prevention.

Prevalence of HIV, Hepatitis B, syphilis, and chlamydia among adults seeking treatment for a mental disorder in southern India

This study estimated the prevalence, and identified the correlates, of HIV, chlamydia, syphilis, and Hepatitis B among patients seeking treatment for a mental disorder in India. Patients (n = 948) submitted a blood sample for serologic testing and participated in a brief interview. Lifetime prevalence rates were nearly 2% for HIV, 10% for chlamydia, 3% for Hepatitis B, and 3% for syphilis; 15% of patients had evidence of at least one infection. Bivariate associations between infection status and patient characteristics, including age, gender, psychiatric diagnosis, did not reveal any consistent risk profile. Instead, behavioral characteristics (i.e., multiple partners, exchanging sex for money, and engagement in anal sex) were associated with infection status. Recommendations for the sexual health care of psychiatric patients in India are provided.

Containing HIV/AIDS in India: the unfinished agenda

India's HIV epidemic is not yet contained and prevention in populations most at risk (high-risk groups) needs to be enhanced and expanded. HIV prevalence as measured through surveillance of antenatal and sexually transmitted disease clinics is the chief source of information on HIV in India, but these data cannot provide real insight into where transmission is occurring or guide programme strategy. The factors that influence the Indian epidemic are the size, behaviours, and disease burdens of high-risk groups, their interaction with bridge populations and general population sexual networks, and migration and mobility of both bridge populations and high-risk groups. The interplay of these forces has resulted in substantial epidemics in several pockets of many Indian states that could potentially ignite subepidemics in other, currently low prevalence, parts of the country. The growth of HIV, unless contained, could have serious consequences for India's development. India's national response to HIV began in 1992 and has shown early success in some states. The priority is to build on those successes by increasing prevention coverage of high-risk groups to saturation level, enhancing access and uptake of care and treatment services, ensuring systems and capacity for evidence-based programming, and building in-country technical and managerial capacity.

Behavior change and health-related interventions for heterosexual risk reduction among drug users

Prevention of heterosexual transmission of HIV between and from drug users is important for controlling the local and global HIV heterosexual epidemic. Sex risk reduction interventions and health-related interventions are important for reducing the sex risk behaviors of drug users. Sex risk reduction interventions address individual-level, peer-level, and structural-level determinants of risk reduction. Health-related interventions include HIV counseling and testing, prevention and treatment of sexually transmitted diseases, and delivery of highly active antiretroviral therapy. It is important to adapt effective interventions implemented in resource-rich countries to the realities of the resource-constrained settings and to address relevant contextual factors.

The role of behavioral data in HIV surveillance

This paper reviews the ways in which data on sexual behavior can contribute to the understanding of HIV prevalence trends based on sentinel surveillance, building on work presented at a meeting on new strategies for HIV/AIDS surveillance in resource-constrained countries, held in Addis Ababa in January 2004. A key component of second-generation surveillance is the collection of data on the behaviors and background characteristics that may influence the course of the HIV epidemic in a population. However, the most appropriate methods for the collection and analysis of these data for various types of epidemic have yet to be established. A conceptual framework is presented outlining the relationships between background characteristics, behaviors and HIV infection. The different methods used to collect data on HIV infection, risk behaviors and background characteristics in generalized and concentrated epidemics are reviewed, including population-based surveys, and surveillance in high- and low-risk groups. The various biases inherent in different approaches are discussed. The implications of linking data at the individual and community levels are explored and recommendations made concerning appropriate analytical approaches, drawing on an example of a pilot study that linked biological and behavioral surveillance in Tanzanian antenatal clinics. The paper concludes with recommendations for the methods and frequency with which to collect the data required for second-generation HIV surveillance.

Surveillance and modelling of HIV, STI, and risk behaviours in concentrated HIV epidemics

BACKGROUND

HIV epidemics in most countries are highly concentrated among population subgroups such as female sex workers, injecting drug users, men who have sex with men, mobile populations, and their sexual partners. The perception that they are important only when they cause epidemic expansion to general populations has obscured a critical lack of coverage of preventive interventions in these groups, as well as appropriate methods for monitoring epidemic and behavioural risk trends. The difficulties in accessing such groups have likewise often cast doubt on the representativeness of observed disease and behavioural risk estimates and their validity and reliability, particularly those related to sampling and the measurement of risk behaviours.

OBJECTIVES

To review methodological obstacles in conducting surveillance with population subgroups in concentrated HIV epidemics, elaborate on recent advancements that partially overcome these obstacles, and illustrate the importance of modelling integrated HIV, STI, and behavioural surveillance data.

METHODS

Review of published HIV, STI, and behavioural surveillance data, research on epidemic dynamics, and case studies from selected countries.

CONCLUSIONS

The population subgroups that merit regular and systematic surveillance in concentrated epidemics are best determined through extensive assessment and careful definition. Adherence to recently refined chain referral and time location sampling methods can help to ensure more representative samples. Finally, because of the inherent limitations of cross sectional surveys in understanding associations between complex sexual behaviours and HIV and STI transmission, mathematical models using multiple year data offer opportunities for integrated analysis of behavioural change and HIV/STI trends.

Prevalence of HIV, syphilis, Chlamydia trachomatis, Neisseria gonorrhoea, Trichomonas vaginalis and candidiasis among pregnant women attending an antenatal clinic in Khartoum, Sudan

Antenatal screening and treatment for sexually transmitted infections (STIs) has shown some benefits in countries where the practice is adopted. To date the prevalence of STIs in the Sudan is unknown. Our aims were to establish the prevalence of STIs among pregnant women in Khartoum (Sudan), to identify any risk factors and to suggest management. One hundred and fifty-one pregnant women were recruited for the study in an antenatal clinic in Khartoum in 1999. The prevalence of Chlamydia trachomatis, HIV, Trichomonas vaginalis, syphilis, Neisseria gonorrhoea and vulvo-vaginal candidiasis among the study population was established; 7.3% of patients suffered multiple infections. No risk factors for acquiring an STI were identified apart from genital ulcer disease. These findings suggest that a syndromic approach for treating STIs during pregnancy might not be possible. We conclude that STIs have a high prevalence among pregnant Sudanese women in Khartoum. The providers of health care in the Sudan need to revise their priority list.