Risk Factors for Human Lice and Bartonellosis among the Homeless,San Francisco,California, USA

Homeless persons in San Francisco, California, USA, have been shown to have head and body lice infestations and Bartonella quintana infections. We surveyed a self-selected population of homeless persons in San Francisco to assess infestations of head and body lice, risks of having body lice, and presence of B. quintana in lice. A total of 203 persons who reported itching were surveyed during 2008–2010 and 2012: 60 (30%) had body lice, 10 (4.9%) had head lice, and 6 (3.0%) had both. B. quintana was detected in 10 (15.9%) of 63 body lice pools and in 6 (37.5%) of 16 head lice pools. Variables significantly associated (p<0.05) with having body lice in this homeless population included male sex, African–American ethnicity, and sleeping outdoors. Our study findings suggest that specific segments of the homeless population would benefit from information on preventing body lice infestations and louseborne diseases.     

Methamphetamine use and sexual risks for HIV infection in Cape Town,South Africa

Aims: The current study examined the use of methamphetamine (Meth) in relation to HIV risks in a South African community sample.

Design and setting: Street intercept methods were used to collect surveys of substance use and sexual behavior from 441 men and 521 women living in a racially mixed township in Cape Town South Africa.

Findings: Results showed that 78 (18%) men and 63 (12%) women had used Meth, and 49 (11%) men and 34 (6%) women ever had used Meth in the preceding 6 months. Other than alcohol, cannabis was the most commonly used drug followed by Meth. We found that Meth use was closely associated with other drug use, indicating a pattern of poly‐substance use among Meth users. Recent Meth use was associated with being male, engaging in unprotected intercourse and having multiple sex partners in the previous 6 months. Meth users also demonstrated greater condom use than non‐users, although less than half of all intercourse occasions among Meth users were condom protected.

Conclusions: Meth is used by a substantial number of people in one area of South Africa and the close association of Meth and sexual risk practices raises concern that Meth could fuel the spread of HIV infection in new South African sub‐populations.     

HIV Treatment Beliefs and Sexual Transmission Risk Behaviors among HIV Positive Men and Women

People are living longer and healthier with HIV infection because of successful combination antiretroviral therapies. HIV treatment beliefs are often associated with sexual practices among people living with HIV/AIDS but these associations may depend on the HIV status of sex partners. In a sample of 158 HIV positive men and women who were receiving HIV treatments, we examined the association between HIV treatment beliefs, HIV transmission risk perceptions, medication adherence, viral load and engaging in unprotected intercourse with any sex partners and specifically with sex partners who were not HIV positive (non-concordant). Results showed having missed medications in the past two days and treatment-related beliefs were significantly associated with engaging in unprotected intercourse with all sex partners as well as non-concordant partners. However, multivariate models showed that only treatment beliefs were significantly associated with engaging in unprotected intercourse with non-concordant partners. These results extend past research by demonstrating that the HIV status of sex partners sets the context for whether prevention-related treatment beliefs are associated with HIV transmission risk behaviors among people living with HIV/AIDS.     

HIV/AIDS risks among South African men who report sexually assaulting women

OBJECTIVE: To examine HIV risks among South African men who report having been sexually assaultive. METHODS: Men (N = 412) in Cape Town completed anonymous surveys. RESULTS: Twenty-three percent reported a history of sexual assault. Men who had been sexually assaultive were younger, reported more sex partners, were more likely to have a history of genital ulcers, and more likely to have exchanged money for sex. Sexually assaultive men were also more likely to endorse rape myths. CONCLUSIONS: Interventions that target men as the agents of change in reducing sexual assaults and HIV transmission are urgently needed.     

Altering Key Characteristics of a Disseminated Effective Behavioral Intervention for HIV Positive Adults: The “Healthy Relationships” Experience

HIV prevention programs targeted to people living with HIV/AIDS are the US national HIV prevention priority. Healthy Relationships is a nationally disseminated HIV prevention program for HIV positive adults. Key characteristics of the intervention package include gender separated groups facilitated by a mental health professional and a HIV positive peer counselor, both of which cause considerable barriers to implementation. We examined an alteration of the original Healthy Relationships intervention (HR-O) that delivered the intervention to mixed gender groups by non-mental health and non-HIV positive facilitators. Process measures from the altered Healthy Relationships intervention (HR-A) were compared to the same measures taken in the HR-O trial. Intervention completion rates were better in the HR-A model (84%) than HR-O (70%). Results showed that HR-A was comparable to HR-O in social support, group cohesion, and group openness. Facilitators in HR-A were viewed somewhat more positive than in HR-O. We found no empirical basis for conducting separate groups by gender or for constraining the facilitators in terms of their professional and HIV statuses. Research is needed to test the assumptions of other evidence-based HIV prevention programs.     

Internet-based health information consumer skills intervention for people living with HIV/AIDS

Medical information can improve health, and there is an enormous amount of health information available on the Internet. A randomized clinical trial tested the effectiveness of an intervention based on social- cognitive theory to improve information use among people living with HIV/AIDS. Men and women (N = 448) were placed in either (a) an 8-session intervention that focused on Internet information consumer skills or (b) a time-matched support group and were followed to 9 months postintervention. The Internet skills group demonstrated greater Internet use for health, information coping, and social support compared with the control group. The authors conclude that people with HIV infection may benefit from increased access to health information on the Internet and that vulnerability to misinformation and fraud can be reduced through behavioral interventions.     

Risk factors for HIV-AIDS among youth in Cape Town, South Africa

South Africa is in the midst of a devastating HIV-AIDS epidemic and most new HIV infections occur among young adults and adolescents. The current study examined risk behaviors and HIV risk factors among young people living in a Black South African township. Using community-based outreach methods of street intercept and facility-based surveying, 113 men and 115 women age 25 and younger responded to an anonymous survey. Results showed that men (68%) and women (56%) reported HIV-related high risk sexual behaviors. Although knowledge about HIV transmission was generally high, there was evidence that misconceptions about AIDS persist, particularly myths related to HIV transmission. For young men, HIV risk factors were associated with fewer years of education, lower levels of AIDS-related knowledge, condom attitudes, and Dagga (marijuana) use. Among young women, HIV risk factors were associated with beliefs that condoms get in the way of sex and rates of unprotected vaginal intercourse. Despite adequate general AIDS knowledge and risk sensitization, South African youth demonstrated high rates of sexual practices that place them at risk for HIV infection. There is an urgent need for behavioral interventions targeted to young South Africans living in the most economically disadvantaged areas.     

Generalizing a model of health behaviour change and AIDS stigma for use with sexually transmitted infection clinic patients in Cape Town, South Africa

We tested the Information-Motivation-Behavioural Skills (IMB) model of AIDS preventive behaviour in South Africa. Prospective path analyses were performed on measures collected from 131 men and 60 women with sexually transmitted infections (STI) in Cape Town. Results showed that IMB constructs collected at baseline predicted risk reduction behaviour 3 months later. Risk reduction intentions were positively associated with risk reduction self-efficacy and self-efficacy was in turn positively associated with protective behaviour 3 months later. In a second model, AIDS-related stigmas correlated inversely with AIDS knowledge and there was a trend toward AIDS stigmas correlating inversely with behavioural intentions. Accounting for AIDS-related stigmas did not improve model fit. These findings parallel similar tests of the IMB model in US samples and suggest that the IMB model may generalize to South Africa and may therefore be useful in guiding HIV risk reduction interventions.