A Longitudinal Study of the Association Between Treatment Optimism and Sexual Risk Behavior in Young Adult Gay and Bisexual Men

Disjuncture between self-perceived and clinically assessed risk of HIV among gay, bisexual, and other men who have sex with men in Ontario and British Columbia, Canada

BACKGROUND

Self-perceived and clinically assessed HIV risk do not always align. We compared self-perceived and clinically assessed risk of HIV and the reasons for self-perceived low risk of HIV among gay, bisexual, and other men who have sex with men (GBM) from large urban centers in Ontario and British Columbia, Canada.

METHODS

Never PrEP users recruited from sexual health clinics or online, completed a cross-sectional survey between July/2019 and August/2020. We contrasted self-perceived HIV risk against criteria from the Canadian PrEP guidelines and participants were categorized as concordant or discordant. We used content analysis to categorize participants' free-text explanations for perceived low HIV risk. These were compared with answers to quantitative responses about condomless sex acts and number of partners.

RESULTS

Of 315 GBM who self-perceived low risk of HIV, 146 (46%) were considered at high risk according to the guidelines. Participants with discordant assessment were younger, had less years of formal education, were more often in an open relationship and were more likely to self-identify as gay. Reasons for self-perceived low HIV risk in the discordant group were condom use (27%), being in a committed relationship/having one main partner (15%), having no or infrequent anal sex (12%) and having few partners (10%).

CONCLUSIONS

There is a disjuncture between self-perceived and clinically assessed risk of HIV. Some GBM may underestimate their HIV risk and clinical criteria may overestimate risk. Bridging these gaps requires efforts to increase HIV risk awareness in the community, and refinement of clinical assessments based on individualized discussions between the provider and the user.

Sexual behaviour changes and HIV infection among men who have sex with men: evidence from an open cohort in China

BACKGROUND

The HIV epidemic in key populations such as men who have sex with men (MSM) is a public health issue of worldwide concern. China has seen an increase in newly diagnosed HIV infections through male-male sexual contact in the past decade. In a long-term cohort, how the complex behaviour pattern of MSM changed and the association with the HIV risk are unclear at present.

METHODS

This study was conducted from October 2011 to December 2019 in Tianjin. MSM were recruited by snowball sampling through online and offline ways. Demographic and sexual behavioural data were collected for analysis. Three indicators (condom use in last anal sex, frequency of condom use during anal sex and the number of sexual partners) were used to define the behaviour change. Participants with zero, one, and two or three risk indicators were categorised into behaviour types of 'protective', 'moderate', and 'fragile', respectively. Change in behaviour type between baseline and each visit was considered. Time-varying Cox models were performed to evaluate HIV infection risk.

RESULTS

Of 2029 MSM included in the study, 127 were new HIV diagnoses. The overall incidence rate was 3.36 per 100 person-years. The percentage of 'protective' and 'moderate' behaviour types had a conspicuous growth trend as the follow-up. Furthermore, the HIV incidence rate in each visit among different behaviour transition types showed a general downward trend as the number of total follow-up times increased. Individuals who remained in 'fragile' (adjusted HR (aHR): 25.86, 95% CI: 6.92 to 96.57) or changed from 'protective' to 'moderate' (aHR: 4.79, 95% CI: 1.18 to 19.47), 'protective' to 'fragile' (aHR: 23.03, 95% CI: 6.02 to 88.13), and 'moderate' to 'fragile' (aHR: 25.48, 95% CI: 6.79 to 95.40) between baseline and the last follow-up had a higher HIV risk. Gained risk indicators were associated with the increase of HIV risk (gained one indicator, aHR: 2.67, 95% CI: 1.68 to 4.24; gained two or three indicators, aHR: 4.99, 95% CI: 3.00 to 8.31) while losing just one risk indicator could halve the risk (aHR: 0.43, 95% CI: 0.21 to 0.90).

CONCLUSIONS

Among MSM in Tianjin, it is necessary to get timely behaviour change for those with high-incidence behaviour patterns while sustaining for those with low-incidence patterns.

TRIAL REGISTRATION NUMBER

Chinese Clinical Trials Registry (ChiCTR2000039500).

Cross-cultural adaptation of the Perceived Risk of HIV Scale in Brazilian Portuguese

BACKGROUND

Valid and reliable instruments are needed to measure the multiple dimensions of perceived risk. The Perceived Risk of HIV Scale is an 8-item measure that assesses how people think and feel about their risk of infection. We set out to perform a cross-cultural adaptation of the scale to Brazilian Portuguese among key populations (gay, bisexual and other men who have sex with men and transgender/non-binary) and other populations (cisgender heterosexual men and cisgender women).

METHODS

Methodological study with cross-sectional design conducted online during October/2019 (key populations [sample 1] and other populations) and February-March/2020 (key populations not on pre-exposure prophylaxis [sample 2]). Cross-cultural adaptation of the Perceived Risk of HIV Scale followed Beaton et al. 2000 guidelines and included confirmatory factor analysis, differential item functioning (DIF) using the Multiple-Indicator Multiple-Cause model, and concurrent validity to verify if younger individuals, those ever testing for HIV, and engaging in high-risk behaviors had higher scores on the scale.

RESULTS

4342 participants from key populations (sample 1 = 235; sample 2 = 4107) and 155 participants from other populations completed the measure. We confirmed the single-factor structure of the original measure (fit indices for sample 1 plus other populations: CFI = 0.98, TLI = 0.98, RMSEA = 0.07; sample 2 plus other populations: CFI = 0.97, TLI = 0.95, RMSEA = 0.09). For the comparisons between key populations and other populations, three items (item 2: "I worry about getting infected with HIV", item 4: "I am sure I will not get infected with HIV", and item 8: "Getting HIV is something I have") exhibited statistically significant DIF. Items 2 and 8 were endorsed at higher levels by key populations and item 4 by other populations. However, the effect of DIF on overall scores was negligible (0.10 and 0.02 standard deviations for the models with other populations plus sample 1 and 2, respectively). Those ever testing for HIV scored higher than those who never tested (p < .001); among key populations, those engaging in high-risk behaviors scored higher than those reporting low-risk.

CONCLUSION

The Perceived Risk of HIV Scale can be used among key populations and other populations from Brazil.

How heterogeneous are MSM from Brazilian cities? An analysis of sexual behavior and perceived risk and a description of trends in awareness and willingness to use pre-exposure prophylaxis

Background

Brazil has the largest population of individuals living with HIV/AIDS in Latin America, with a disproportional prevalence of infection among gays, bisexuals and other men who have sex with men (MSM). Of relevance to prevention and treatment efforts, Brazilian MSM from different regions may differ in behaviors and risk perception related to HIV.

Methods

We report on MSM living in 29 different cities: 26 Brazilian state capitals, the Federal District and two large cities in São Paulo state assessed in three web-based surveys (2016–2018) advertised on Grindr, Hornet and Facebook. Using logistic regression models, we assessed the association of risk behavior with HIV perceived risk as well as factors associated with high-risk behavior.

Results

A total of 16,667 MSM completed the survey. Overall, MSM from the North and Northeast were younger, more black/mixed-black, of lower income and lower education compared to MSM from the South, Southeast and Central-west. Though 17% had never tested for HIV (with higher percentages in the North and Northeast), condomless receptive anal sex (previous 6 months) and high-risk behavior as per HIV Incidence Risk scale for MSM were observed for 41 and 64%, respectively. Sexual behavior and HIV perceived risk had low variability by city and high-risk behavior was strongly associated with high HIV perceived risk. Younger age, being gay/homosexual, having a steady partner, binge drinking, report of sexually transmitted infection (STI) and ever testing for HIV were associated with increased odds of high-risk behavior. Awareness and willingness to use PrEP increased from 2016 to 2018 in most cities.

Conclusions

Overall, MSM socio-demographic characteristics were heterogeneous among Brazilian cities, but similarities were noted among the cities from the same administrative region with a marked exception of the Federal District not following the patterns for the Central-West. Combination HIV prevention is most needed among young men who self-identify as gay/homosexual, report binge drinking or prior STI.

Discordance between self-perceived and actual risk of HIV infection among men who have sex with men and transgender women in Thailand: a cross-sectional assessment

INTRODUCTION

Low uptake of HIV testing and services, including pre-exposure prophylaxis (PrEP), in Thai men who have sex with men (MSM) and transgender women (TGW) may be due to the inaccuracy in self-risk assessment. This study investigated the discordance between self-perceived HIV risk and actual risk.

METHODS

Data were obtained between May 2015 and October 2016 from MSM and TGW enrolled in key population-led Test and Treat study in six community health centres in Thailand. Eligible participants were at least 18 years old, Thai national, had sex with men, had unprotected sex with a man in the past six months or had at least three male sex partners in the past six months, and were not known to be HIV positive. Baseline demographic behavioural characteristics questionnaires, including self-perceived HIV risk, were self-administered. Participants received HIV/STI (syphilis/gonorrhoea/chlamydia) testing at baseline. Participants who self-perceived to have low risk, but engaged in HIV-susceptible practices were categorized as having risk discordance (RD). Regression was conducted to assess factors associated with RD among MSM and TGW separately.

RESULTS

Of the 882 MSM and 406 TGW participants who perceived themselves as having low HIV risk, over 80% reported at least one of the following: tested HIV positive, engaged in condomless sex, tested positive for a sexually transmitted infection sexually transmitted infection (STI; or used amphetamine-type stimulants. Logistic regression found that living with a male partner (p = 0.005), having never tested for HIV (p = 0.045), and living in Bangkok (p = 0.01) and Chiang Mai (p < 0.001) were associated with increased risk discordance among MSM. Living with a male partner (p = 0.002), being less than 17 years old at sexual debut (p = 0.001), and having a low knowledge score about HIV transmission (p < 0.001) were associated with increased risk discordance among TGW. However, for TGW, being a sex worker decreased the chance of risk discordance (p = 0.034).

CONCLUSIONS

Future HIV prevention messages need to fill in the gap between self-perceived risk and actual risk in order to help HIV-vulnerable populations understand their risk better and proactively seek HIV prevention services.

Comfort Relying on HIV Pre-exposure Prophylaxis and Treatment as Prevention for Condomless Sex: Results of an Online Survey of Australian Gay and Bisexual Men

HIV-negative and untested gay and bisexual men from Victoria, Australia (n = 771) were surveyed during August-September 2016 about their comfort having condomless sex with casual male partners in scenarios in which pre-exposure prophylaxis (PrEP) or treatment as prevention were used. Men not using PrEP were most comfortable with the idea of condomless sex with HIV-negative partners (31%), followed by partners using PrEP (23%). PrEP users were more comfortable with the idea of condomless sex with these partner types (64 and 72%, respectively). Very few men not taking PrEP were comfortable with condomless sex with HIV-positive partners (3%), even with undetectable viral loads (6%). PrEP users were more comfortable with condomless sex with HIV-positive partners (29%), and those with undetectable viral loads (48%). Being on PrEP, having recent condomless sex with casual partners or a HIV-positive regular partner were independently associated with comfort having condomless sex.

'I'm more aware of my HIV risk than anything else': syndemics of syphilis and HIV among gay men in Winnipeg

Despite decreased rates of HIV infection in Winnipeg, syphilis incidence continues to rise. Communities of men who have sex with men shoulder much of this burden of illness. This qualitative study aimed to better understand the co-evolution of HIV and syphilis in Winnipeg through a series of interviews with gay men. Eighteen individuals were recruited through advertising in sexual health centres and through subsequent snowball sampling. Thematic interpretive analysis and inductive reasoning were used to find individual and shared group meanings. We found that HIV formed the contextual ground on which sexual decision-making was made, with three main themes emerging during interviews: 1) bacterial STI transience being contrasted against HIV permanence; 2) syphilis being 'dirty' versus HIV carrying significant stigma, though being spared the label of uncleanliness; and 3) the role of pleasure and intimacy in sexual health decision-making. Based on these findings, we recommend further exploration to develop more effective strategies around syphilis prevention, in particular with regards to the longer-term illness ramifications and its relationship to HIV transmission.

Birth Cohort Variations Across Functional Knowledge of HIV Prevention Strategies, Perceived Risk, and HIV-Associated Behaviors Among Gay, Bisexual, and Other Men Who Have Sex With Men in the United States

Gay, bisexual, and other men who have sex with men (GBMSM) in the United States remain heavily impacted by HIV. The purpose of this study was to describe intergenerational differences in functional knowledge of HIV prevention strategies, perceived risk, recent condomless anal sex (CAS), and HIV testing behavior. Eight hundred sexually active GBMSM were recruited via Facebook from August to September 2015, and administered a Web-based survey which included 12 multiple-choice questions to elicit data regarding functional knowledge of different HIV prevention approaches (e.g., condom use, pre-exposure prophylaxis post-exposure prophylaxis, treatment as prevention, circumcision). Cumulative logit and multivariable logistic models were formulated to examine birth cohort variations across four analytic outcomes. Younger generations were significantly more knowledgeable, as were GBMSM with higher education. Non-Hispanic non-White GBMSM and those reporting a bisexual/other sexual orientation had lower functional knowledge. Younger generations were equally concerned about contracting HIV as their older counterparts. Perceived risk was significantly higher among non-Hispanic non-White and Hispanic GBMSM, but lower among those with higher education and those in a relationship. Finally, birth cohort variations with respect to engaging in CAS with ≥2 men in the past 3 months and testing for HIV in the past year were not markedly pronounced. Younger GBMSM might be more knowledgeable about HIV prevention strategies compared to their predecessors, but are equally concerned about contracting HIV. Researchers and practitioners should consider intergenerational and other demographic differences while designing multifaceted HIV prevention programs for GBMSM.

HIV Prioritization and Risk Perception Among an Online Sample of Men Who Have Sex With Men in the United States

Men who have sex with men (MSM) may prioritize interpersonal and structural factors, such as LGBTQ-related inequalities, housing instability, financial insecurity, and relationship seeking, over HIV prevention. The aim of this study was to assess how MSM prioritize HIV relative to other factors and the association between HIV prioritization, HIV testing and sexual risk behavior, and perceived risk. Data were collected from a national online survey of MSM in the United States assessing HIV knowledge and prioritization. Participants ranked HIV prevention relative to LGBTQ-related concerns and life issues (e.g., housing, job, relationship). Adjusted regression models were conducted to assess the association of HIV prioritization with HIV testing and condomless anal sex (CAS) and to evaluate associations between perceived risk and HIV risk behavior. Among 516 participants, HIV prevention was ranked significantly higher among MSM reporting recent CAS (p = .04) and HIV testing within the past (p = .02); HIV prevention was prioritized higher relative to life issues among MSM reporting last HIV test more than 1 year ago (p = .02). Perceived HIV risk was significantly associated with higher HIV prioritization relative to LGBTQ concerns (p = .001) and life issues (p = .001). Higher HIV perceived risk was associated with lower odds of any CAS (p < .001) and higher odds of having an HIV test in the past year (p < .001). In this online study, HIV prioritization was identified as differentially associated with HIV testing, sexual risk behavior, and perceived HIV risk. HIV prevention programs should integrate strategies to address social and structural inequalities based on priority needs of MSM.

Individual Versus Community-Level Risk Compensation Following Preexposure Prophylaxis of HIV

We analyzed the concept of risk compensation and how it has been applied in HIV prevention, paying particular attention to the strategy of HIV preexposure prophylaxis (PrEP). In risk compensation, reduced perceptions of risk after the introduction of a preventative intervention lead to more frequent risk-taking behavior. Such a change may undermine the intervention's protective benefits. We found that many studies purporting to investigate risk compensation do not assess or report changes in perceptions of risk, instead relying on behavioral measures. Our analysis suggests a complex and sometimes counterintuitive relationship between the introduction of a new prevention intervention, perceptions of HIV risk, and subsequent changes in behavior. As PrEP is introduced, we believe comprehensive assessment of community-level risk compensation-that is, changes in risk perceptions and behavior as a result of increased optimism about avoiding HIV among people not directly protected by PrEP-should not be omitted. We therefore suggest ways to assess prevention optimism and community-level risk compensation.

HIV Prevention Fatigue and HIV Treatment Optimism Among Young Men Who Have Sex With Men

HIV prevention fatigue (the sense that prevention messages are tiresome) and being overly optimistic about HIV treatments are hypothesized to increase HIV risk behavior. Little research has examined these constructs and their correlates among young men who have sex with men (YMSM), who are at high risk for HIV. YMSM (N = 352; M_age = 20; 50% Black) completed measures of prevention fatigue, treatment optimism, HIV risk behaviors, and HIV-related knowledge and attitudes during a longitudinal study. Overall, YMSM reported low levels of HIV prevention fatigue and treatment optimism. Path analysis (n = 307) indicated that greater prevention fatigue and treatment optimism predicted higher rates of condomless sex, but condomless sex did not predict later increases in prevention fatigue or treatment optimism. Results are inconsistent with the hypothesis of high prevention fatigue and treatment optimism among YMSM and point to potential causal relationships among these variables and condomless sex.

Seroadaptive Strategies of Vancouver Gay and Bisexual Men in a Treatment as Prevention Environment

British Columbia's treatment as prevention policy has provided free access to highly active antiretroviral therapy (HAART) to all HIV-positive provincial residents since 1996. One outcome is an increase in HIV-positive gay and bisexual men (GBM) with suppressed viral loads. Previous cross-sectional analyses indicated that some Vancouver GBM now recognize condomless anal sex with men on HAART who report a suppressed viral load as a seroadaptive strategy. To test the hypothesis that this new strategy, termed viral load sorting (VLS), is recognized and used among by GBM in the Momentum Health Study, we analyzed longitudinal data for HIV-negative/unknown (n = 556) and HIV-positive (n = 218) serostatus participants. Analyses indicated that both groups reported VLS, and that serostatus and Treatment Optimism Scale scores were significant determinants in frequency and use. Results exemplify the medicalization of sex and Rogers' Diffusion Of Preventative Innovations Model, and they have important implications for HIV research and GBM sexual decision-making.

Challenges to HIV management among youth engaged in HIV care

Regardless of medical advancements, new HIV infections persist. Young adults are most often newly infected, thus research is needed to assess medication adherence barriers specific to young adults with HIV. The data were abstracted from medical charts to include both self-reported behavioral and psychological distress data and HIV parameters in 2013 among patients aged 18-30 years. Descriptive and logistic regression analyses were conducted to identify factors related to viral suppression and sexually transmitted infection (STI) status. A total of 335 individuals presented for care during a 12-month period at a single clinic. The majority were African American and had a mean age of 25.6 years. Nearly all had current prescriptions of antiretroviral therapy (ART). Among those receiving ART, almost three-quarters were virally suppressed, as measured by 200 copies/mL. STI tests are conducted annually and by assessed need; 30% of this sample had at least 1 bacterial STI diagnosis within the last year. Psychological distress symptoms were more common among individuals who were not virally suppressed, compared to those who were virally suppressed. Women and individuals with moderate to severe symptoms of depression had higher odds of having unsuppressed viral loads. The independent factors associated with having any STIs were being African American or other minorities and having two or more sex partners. Our findings related to how young adults are managing their HIV care suggest that increased efforts aimed to prevent additional STIs and manage psychological distress will likely reduce transmission risks.

Unusual primary syphilis: Presentation of a likely case with a review of the stages of acquired syphilis, its differential diagnoses, management, and current recommendations

Syphilis is an ancient disease that has re-emerged in the last decade. It is prevalent among men who have sex with men and has increased in incidence with certain ethnic groups. It usually presents as primary or secondary syphilis and can progress to tertiary syphilis if not treated. Primary syphilis will classically manifest as a single, painless ulcer with smooth, clean, and raised borders on the genitals or less often on the oral mucosa. Unusual primary syphilis cases have been reported and can be easily misdiagnosed with a resulting delay of treatment. Secondary syphilis is a systemic disease, wherein the treponemes have disseminated to various organ systems, typically presenting with characteristic mucocutaneous lesions. Tertiary syphilis has a higher rate of morbidity and mortality; as such, the aim of this article is to provide the readers with tools to recognize early syphilis and prevent its progression to late stages. In this review, we present a likely case of unusual primary syphilis mimicking herpes progenitalis as well as a compilation of all atypical cases of primary syphilis from 1973 to 2015. We will also review the differential diagnosis, management, and recommendations for each stage of syphilis.

Do behavioral scientists really understand HIV-related sexual risk behavior? A systematic review of longitudinal and experimental studies predicting sexual behavior

Behavioral interventions to reduce sexual risk behavior depend on strong health behavior theory. By identifying the psychosocial variables that lead causally to sexual risk, theories provide interventionists with a guide for how to change behavior. However, empirical research is critical to determining whether a particular theory adequately explains sexual risk behavior. A large body of cross-sectional evidence, which has been reviewed elsewhere, supports the notion that certain theory-based constructs (e.g., self-efficacy) are correlates of sexual behavior. However, given the limitations of inferring causality from correlational research, it is essential that we review the evidence from more methodologically rigorous studies (i.e., longitudinal and experimental designs). This systematic review identified 44 longitudinal studies in which investigators attempted to predict sexual risk from psychosocial variables over time. We also found 134 experimental studies (i.e., randomized controlled trials of HIV interventions), but of these only 9 (6.7 %) report the results of mediation analyses that might provide evidence for the validity of health behavior theories in predicting sexual behavior. Results show little convergent support across both types of studies for most traditional, theoretical predictors of sexual behavior. This suggests that the field must expand the body of empirical work that utilizes the most rigorous study designs to test our theoretical assumptions. The inconsistent results of existing research would indicate that current theoretical models of sexual risk behavior are inadequate, and may require expansion or adaptation.

Where does treatment optimism fit in? Examining factors associated with consistent condom use among people receiving antiretroviral treatment in Rio de Janeiro, Brazil

In the era of highly active antiretrovirals, people living with HIV (PLWH) have resumed sexual activity in the context of longer and healthier lives, and thus the chances of transmitting the HIV virus, as well as the potential to be re-infected also increase. HIV treatment optimism has been found to be associated with sexual risk behaviors among PLWH in different settings. A cross sectional survey was conducted to examine the relationship between treatment optimism, safer sex burnout and consistent condom use as well as variables associated with treatment optimism in a sample of PLWH on antiretrovirals (ARVs) in Rio de Janeiro, Brazil (n = 604). Seventy-two percent of participants always used a condom in the last 6 months. Homosexual, bisexual, transexual persons were less likely to use condoms consistently than heterosexuals (AOR .58 CI .42-.78). Those who were treatment optimistic (AOR .46 CI .25-.88) were more likely not use a condom consistently in the past 6 months, as were participants who reported safer sex burnout (AOR .58 CI .36-.90). Sexual orientation, safer sex burnout, and lower education levels were significantly associated with higher treatment optimism in multivariate analysis. Study findings highlight the need to address psychosocial factors such as treatment optimism and safer sex burnout associated with lower consistent condom use among PLWH in Rio de Janeiro, Brazil.

Changes in developmental contexts as predictors of transitions in HIV-risk behaviors among young men who have sex with men (YMSM)

Emerging adulthood is a transitional time often marked by instability in many areas of life, including residential status, work, school, and romantic relationships. The purpose of this study is to examine transitions in HIV-risk related behaviors among a cohort of ethnically-diverse young men who have sex with men (YMSM) and to reveal how changes in developmental contexts during emerging adulthood might be associated with these behavioral changes. Hidden Markov models were used to examine movement across different stages of behavioral risk-taking over time. Semi-annual surveys were administered across 2 years; analyses included those with at least three of the five waves of data. Results indicated substantial movement at the individual-level transitions. Additionally, high variability in sexual risk, alcohol misuse, and illicit drug-risk behaviors was predicted by age, ethnicity, and correlates of emerging adulthood, such as residential status, work, post-secondary school enrollment, and primary-relationship status. Findings provide evidence of great change in risky behaviors among YMSM during this pivotal time, particularly among those who actively experiment in varying levels of risk-taking. In order to prevent experimental behaviors from evolving into more serious risk, interventions must consider ways to assist YMSM to adjust to life changes brought on by emerging adulthood.

Changing risk behaviours and the HIV epidemic: a mathematical analysis in the context of treatment as prevention

Background

Expanding access to highly active antiretroviral therapy (HAART) has become an important approach to HIV prevention in recent years. Previous studies suggest that concomitant changes in risk behaviours may either help or hinder programs that use a Treatment as Prevention strategy.

Analysis

We consider HIV-related risk behaviour as a social contagion in a deterministic compartmental model, which treats risk behaviour and HIV infection as linked processes, where acquiring risk behaviour is a prerequisite for contracting HIV. The equilibrium behaviour of the model is analysed to determine epidemic outcomes under conditions of expanding HAART coverage along with risk behaviours that change with HAART coverage. We determined the potential impact of changes in risk behaviour on the outcomes of Treatment as Prevention strategies. Model results show that HIV incidence and prevalence decline only above threshold levels of HAART coverage, which depends strongly on risk behaviour parameter values. Expanding HAART coverage with simultaneous reduction in risk behaviour act synergistically to accelerate the drop in HIV incidence and prevalence. Above the thresholds, additional HAART coverage is always sufficient to reverse the impact of HAART optimism on incidence and prevalence. Applying the model to an HIV epidemic in Vancouver, Canada, showed no evidence of HAART optimism in that setting.

Conclusions

Our results suggest that Treatment as Prevention has significant potential for controlling the HIV epidemic once HAART coverage reaches a threshold. Furthermore, expanding HAART coverage combined with interventions targeting risk behaviours amplify the preventive impact, potentially driving the HIV epidemic to elimination.

Syphilis among men who have sex with men (MSM) in Taiwan: its association with HIV prevalence, awareness of HIV status, and use of antiretroviral therapy

To understand how awareness of HIV-positivity and the use of antiretroviral therapy associated with syphilis infection, 361 MSM attending 16 Hong-Pa (drug-and-sex parties) in Taiwan were studied. The syphilis rate of individuals within their first 2 years after HIV diagnosis (awareness) was lower than that in individuals who had not been diagnosed HIV infection prior to Hong-Pa (unawareness) (Adj OR = 0.24, P < 0.05). Notably, there was a decrease in the beneficial effect of HIV-positive status awareness on syphilis prevention with an increase in time since notification. Moreover, antiretroviral therapy was not associated with a lower incidence of syphilis, and syphilis infection peaked during the treatment dropout period. In conclusion, the duration of a protective effect of knowing one's HIV-positivity against syphilis infection was short, and the highest risk of syphilis infection was observed when patients discontinued antiretroviral therapy. Future research should examine the behavioral mechanisms involved in this prevention failure.

Correlates of unprotected vaginal or anal intercourse with women among substance-using men who have sex with men

The role men who have sex with men and women (MSMW) play in heterosexual HIV transmission is not well understood. We analyzed baseline data from Project MIX, a behavioral intervention study of substance-using men who have sex with men (MSM), and identified correlates of unprotected vaginal intercourse, anal intercourse, or both with women (UVAI). Approximately 10 % (n = 194) of the men reported vaginal sex, anal sex, or both with a woman; of these substance-using MSMW, 66 % (129) reported UVAI. Among substance-using MSMW, multivariate analyses found unemployment relative to full/part-time employment (OR = 2.28; 95 % CI 1.01, 5.17), having a primary female partner relative to no primary female partner (OR = 3.44; CI 1.4, 8.46), and higher levels of treatment optimism (OR = 1.73; 95 % CI 1.18, 2.54) increased odds of UVAI. Strong feelings of connection to a same-race gay community (OR = 0.71; 95 % CI 0.56, 0.91) and Viagra use (OR = 0.31; 95 % CI 0.10, 0.95) decreased odds of UVAI. This work suggests that although the proportion of substance-using MSM who also have sex with women is low, these men engage in unprotected sex with women, particularly with primary female partners. This work highlights the need for further research with the substance using MSMW population to inform HIV prevention interventions specifically for MSMW.

HIV/AIDS complacency and HIV infection among young men who have sex with men, and the race-specific influence of underlying HAART beliefs

BACKGROUND

Among men who have sex with men (MSM) in the United States, the influence of HIV/AIDS complacency and beliefs about the efficacy of highly active antiretroviral therapy (HAART) on HIV-infection risk is unknown.

METHODS

We analyzed data from a 1998-2000 cross-sectional 6-city survey of 1575 MSM aged 23 to 29 years who had never tested for HIV or had last tested HIV-negative to assess these plausible influences overall and by race/ethnicity.

FINDINGS

Measured as strong endorsement for reduced HIV/AIDS concern due to HAART, HIV/AIDS complacency was associated with reporting ≥10 male sex partners (odds ratio [OR], 2.94; 95% confidence interval [CI], 2.12-4.07), unprotected anal intercourse with an HIV-positive or HIV-unknown-status male partner (OR, 2.06; 95% CI, 1.51-2.81), and testing HIV-positive (adjusted OR [AOR], 2.35; 95% CI, 1.38-3.98). Strong endorsement of the belief that HAART mitigates HIV/AIDS severity was more prevalent among black (21.8%) and Hispanic (21.3%) than white (9.6%) MSM (P < 0.001), and was more strongly associated with testing HIV-positive among black (AOR, 4.65; 95% CI, 1.97-10.99) and Hispanic (AOR, 4.12; 95% CI, 1.58-10.70) than white (AOR, 1.62; 95% CI, 0.64-4.11) MSM.

CONCLUSIONS

Young MSM who are complacent about HIV/AIDS because of HAART may be more likely to engage in risk behavior and acquire HIV. Programs that target HIV/AIDS complacency as a means to reduce HIV incidence among young MSM should consider that both the prevalence of strong HAART-efficacy beliefs and the effects of these beliefs on HIV-infection risk might differ considerably by race/ethnicity.

Sorting through chickens and eggs: a longitudinal examination of the associations between attitudes, norms, and sexual risk behavior

OBJECTIVE

Health behavior theories posit that health-relevant attitudes, beliefs, and behavioral skills drive subsequent actions people take to protect themselves from health threats. Within the realm of HIV-related sexual risk behavior, much of the research in support of this notion is cross-sectional, rather than longitudinal, particularly in studies of gay and bisexual men. Other psychological theories (e.g., self-perception or cognitive dissonance theories) suggest that the opposite could be true--that health-relevant attitudes and beliefs might change as a function of previous risk or precautionary behavior. Appreciating the complex nature of these associations is essential for modifying theory and developing appropriate interventions.

DESIGN

Using longitudinal data from gay and bisexual men (n = 1465), we used structural equation modeling to examine three possibilities--that perceived norms and attitudes about sexual risk would be (a) related to unprotected anal intercourse cross-sectionally, (b) related to unprotected anal intercourse at a subsequent time point, and/or (c) predicted from previous instances of unprotected anal intercourse.

RESULTS

Safe-sex norms and attitudes were related to unprotected anal intercourse cross-sectionally, but did not predict unprotected sex longitudinally. Rather, perceived norms and attitudes changed as a function of previous risk behavior.

CONCLUSIONS

These results raise the possibility that modified theoretical models might be necessary to adequately describe sexual risk behavior among gay and bisexual men.

A plausible causal model of HAART-efficacy beliefs, HIV/AIDS complacency, and HIV-acquisition risk behavior among young men who have sex with men

Despite considerable research, the causal relationship remains unclear between HIV/AIDS complacency, measured as reduced HIV/AIDS concern because of highly active antiretroviral therapy (HAART), and HIV risk behavior. Understanding the directionality and underpinnings of this relationship is critical for programs that target HIV/AIDS complacency as a means to reduce HIV incidence among men who have sex with men (MSM). This report uses structural equation modeling to evaluate a theory-based, HIV/AIDS complacency model on 1,593 MSM who participated in a venue-based, cross-sectional survey in six U.S. cities, 1998-2000. Demonstrating adequate fit and stability across geographic samples, the model explained 15.0% of the variance in HIV-acquisition behavior among young MSM. Analyses that evaluated alternative models and models stratified by perceived risk for HIV infection suggest that HIV/AIDS complacency increases acquisition behavior by mediating the effects of two underlying HAART-efficacy beliefs. New research is needed to assess model effects on current acquisition risk behavior, and thus help inform prevention programs designed to reduce HIV/AIDS complacency and HIV incidence among young MSM.

Assessing maladaptive responses to the stress of being at risk of HIV Infection among HIV-negative gay men in New York City

The aim of this study was to examine the psychometric properties and preliminary validity of a newly developed 16-item measure to assess maladaptive responses to the stress of being at risk for HIV infection among HIV-negative gay men. The measure consisted of three factors: (a) fatalistic beliefs about maintaining an HIV-negative serostatus, (b) reduced perceived severity of HIV infection due to advances in medical treatment of HIV and AIDS, and (c) negative affective states associated with the risk of HIV infection. A total of 285 HIV-negative gay men at a counseling program in New York City participated in the study. Confirmatory factor analyses supported the three-factor model as an acceptable model fit: non-normed fit index = .91, comparative fit index = .92, goodness-of-fit index = .90, and root mean square error of approximation = .07. The measure and its subscales obtained in this sample achieved adequate internal consistency coefficients. Construct validity was supported by significant and positive associations with internalized homophobia, depression, self-justifications for the last unprotected anal intercourse (UAI), and actual UAI with casual sex partners. Understanding the dynamics of maladaptive responses to the epidemic and intense anxieties elicited by HIV risk among HIV-negative gay men living in a place of high seroprevalence provides useful information to guide psychosocial interventions in the population.

Safer sexual behaviours after 1 year of antiretroviral treatment in KwaZulu-Natal, South Africa: a prospective cohort study

BACKGROUND

As antiretroviral treatment (ART) becomes more widely available in low and middle income countries, the relationship between treatment and sexual risk behaviour in these countries has also become more important.

METHODS

This is a prospective study of all treatment-na?ve patients (n = 735) recruited from all three public hospitals in Uthukela health district in KwaZulu-Natal and followed up at 6 and 12 months of being on ART.

RESULTS

No evidence of increased risky sexual behaviours over time was found, from before commencing on ART, to 6 and 12 months on ART. Specifically, a significant reduction in risk taking was reported regarding sex without a condom in the past 3 months (P = 0.001) and unprotected sex with HIV-negative or unknown HIV status persons (P = 0.003). The number of sexual partners did, however, not significantly reduce over time. Some socio-demographic factors were associated with unprotected sex (being a man: odds ratio 1.7 (1.1-2.7), lower education: 0.4 (0.2-0.8)), one health factor (higher CD4 cell counts: 2.6 (1.1-6.1)) and social-behavioural factors (higher stigma: 1.2 (1.1-1.3), alcohol use at last sex: 6.9 (1.8-26.1)) and lower ART adherence: 0.5 (0.2-0.08)), while HIV knowledge (ART optimism, duration since known HIV-positive, HIV disease and treatment related knowledge), HIV symptoms and depression were not associated with unprotected sex.

CONCLUSIONS

This prospective study with a large sample of persons on ART showed evidence of inhibition of risky sexual behaviours over time. Although unsafe sexual behaviours had decreased, some proportion did not practice safe sex.

Two-year follow-up of sexual behavior among HIV-uninfected household members of adults taking antiretroviral therapy in Uganda: no evidence of disinhibition

This paper examines HIV risk behavior among HIV-uninfected adults living with people taking antiretroviral therapy (ART) in Uganda. A prospective cohort of 455 HIV-uninfected non-spousal household members of ART patients receiving home-based AIDS care was enrolled. Sexual behavior, HIV risk perceptions, AIDS-related anxiety, and the perception that AIDS is curable were assessed at baseline, 6, 12 and 24 months. Generalized linear mixture models were used to model risk behavior over time and to identify behavioral correlates. Overall, risky sex decreased from 29% at baseline to 15% at 24-months. Among women, risky sex decreased from 31% at baseline to 10% at 6 months and 15% at 24 months. Among men, risky sex decreased from 30% at baseline to 8% at 6 months and 13% at 24 months. Perceiving HIV/AIDS as curable and lower AIDS-related anxiety were independently associated with risky sex. No evidence of behavioral disinhibition was observed. Concerns regarding behavioral disinhibition should not slow down efforts to increase ART access in Africa.

Effects of disengagement coping with HIV risk on unprotected sex among HIV-negative gay men in New York City

OBJECTIVE

This study examined how disengagement coping with HIV risk mediated the association between internalized homophobia and unprotected anal intercourse (UAI) and how sexual encounters in public venues (public sex) and drug use moderated the association between disengagement coping and UAI among HIV-negative gay men. Disengagement coping included fatalistic beliefs about maintaining HIV-negative seronegative serostatus (fatalism), optimistic attitudes toward medical seriousness of HIV infection and reduced concern about HIV risk due to highly active anti-retroviral therapies (optimism), and negative affective states associated with sexual risk (anxiety).

DESIGN

A survey was conducted among 285 HIV-negative gay men at an HIV prevention counseling program in New York City.

MAIN OUTCOME MEASURES

Sexual risk was defined as having had UAI with nonprimary partners in the past 6 months.

RESULTS

In addition to the positive association between internalized homophobia, disengagement coping, and UAI, fatalism mediated the association between internalized homophobia and UAI; and optimism mediated the association between anxiety and UAI. A significant moderation effect of public sex was found between fatalism and UAI.

CONCLUSIONS

The findings highlight the importance of understanding disengagement coping as it affects sexual risk practices among HIV-negative gay men in the continuing epidemic.

Sexual risk behavior and drug use in two Chicago samples of men who have sex with men: 1997 vs. 2002

Employing data from two Chicago-based household probability samples of men who have sex with men (MSM) implemented 5 years apart (the "UMHS 1997" and the "2002 MSM supplement" studies), we evaluated changes in risk behavior as well as the potential viability of two alternative perspectives for explaining these changes--risk management and safe-sex norm abandonment. We found significantly increased rates of unprotected insertive and receptive anal intercourse in the 2002 study. Sixty-eight percent of UMHS men reported having sex with partners having HIV positive or unknown status, compared with 38% of the MSM supplement men (p < .0001). Serosorting mediated and moderated the most extreme forms of risk behavior. Positive statistical associations between drug use and unprotected sex were stronger in the UMHS sample than in the MSM supplement. Findings suggesting that "risk management" strategies have shaped MSM behavior as it emerged in the early part of this decade have considerable implications for HIV prevention strategies.

HIV treatment optimism and unsafe anal intercourse among HIV-positive men who have sex with men: findings from the positive connections study

This study was designed to examine the impact of HIV treatment optimism on sexual risk among a racially diverse sample of HIV-positive MSM. Survey data were collected from 346 racially diverse HIV-positive MSM.

INCLUSION CRITERIA

18 years of age, male, at least one incident of unprotected anal intercourse (UAI) in the last year, currently on treatment. Other variables included demographics, sexual risk, depression, internalized homonegativity, HIV treatment history, alcohol/drug use and beliefs about HIV treatments (Susceptibility to transmit HIV, Severity of HIV infection and Condom Motivation). Those with lower income were more likely to report that HIV was less transmissible. A self-reported decrease in condom motivation was associated with being White, well-educated and increased alcohol/drug use. A decrease in Severity of HIV was associated with better mental health, being non-White and undetectable viral load. Sexual risk appears related to beliefs about how treatment affects the transmissibility of HIV. Race, socioeconomic status, alcohol/drug use, mental health and viral load were also associated with treatment beliefs.

Development of a treatment optimism scale for HIV-positive gay and bisexual men

Potential items to be included in an HIV Treatment Optimism scale were reviewed by 17 HIV-positive gay and bisexual men (GBM), resulting in a 21-item test instrument. After pilot testing, data were collected from a multi-city sample of high-risk HIV-positive GBM (n=346), who were currently on treatment and were recruited to attend a two-day sexual health seminar. The scale items were analyzed utilizing Principal Components Analysis and reliability testing. The factor analysis resulted in the development of three separate scales. The Susceptibility scale contained 10 items associated with a belief that HIV is less transmissible while on HIV treatment. The Condom Motivation scale contained five items addressing a decreased motivation to use condoms while on treatment and the Severity scale contained four items associated with a decreased sense of the severity of an HIV diagnosis. Reliability coefficients (alpha) and mean inter-item correlations (M) for the three scales were acceptable (Susceptibility, alpha = 0.86, M=0.39; Condom Motivation, alpha = 0.84, M = 0.50; Severity, alpha = 0.71, M=0.37). Combined as one scale,the reliability coefficient was respectable (alpha = 0.76), but the mean inter-item correlation was 0.14. Based on this analysis, use of a single measure was not supported and three separate scales were developed. The scales were equivalent across racial groups except White men were more like to report a decreased motivation to use condoms compared to Black or Latino men. Three separate scales addressing beliefs about the transmissibility of HIV while on treatment (Susceptibility), the quality of life while on HIV treatment (Severity) and the motivation to use condoms consistently while on treatment (Condom Motivation) may be better markers for assessing optimistic beliefs about HIV treatment among HIV-positive GBM.

Formation of personal HIV disclosure policies among HIV-positive men who have sex with men

Given the increasing emphasis on "prevention with positives" programs designed to promote HIV transmission risk reduction among people living with HIV/AIDS, better understanding of influences upon serostatus disclosure in sexual situations is needed. Based on grounded theory analyses of individual interviews, this exploratory research hypothesizes and interprets how 15 HIV-positive men who have sex with men (MSM) formed personal HIV disclosure policies for sexual situations. Participants described five elements influencing development of their personal policies, including: (1) making sense of having been infected, (2) envisioning sex as an HIV-positive man, (3) sorting through feelings of responsibility for others, (4) responding to views of friends and the gay community, and (5) anticipating reactions and consequences of disclosure. The article concludes with implications for current initiatives for prevention with positives.

The WHOMEN's scale (Women's HAART Optimism Monitoring and EvaluatioN Scale v.1) and the association with fertility intentions and sexual behaviours among HIV-positive women in Uganda

The objective of this study was to develop a reliable HAART optimism scale among HIV-positive women in Uganda and to test the scale's validity against measures of fertility intentions, sexual activity, and unprotected sexual intercourse. We used cross-sectional survey data of 540 women (18-50 years) attending Mbarara University's HIV clinic in Uganda. Women were asked how much they agreed or disagreed with 23 statements about HAART. Data were subjected to a principal components and factor analyses. Subsequently, we tested the association between the scale and fertility intentions and sexual behaviour using Wilcoxon rank sum test. Factor analysis yielded three factors, one of which was an eight-item HAART optimism scale with moderately high internal consistency (alpha = 0.70). Women who reported that they intended to have (more) children had significantly higher HAART optimism scores (median = 13.5 [IQR: 12-16]) than women who did not intend to have (more) children (median = 10.5 [IQR: 8-12]; P < 0.0001). Similarly, women who were sexually active and who reported practicing unprotected sexual intercourse had significantly higher HAART optimism scores than women who were sexually abstinent or who practiced protected sexual intercourse. Our reliable and valid scale, termed the Women's HAART Optimism Monitoring and EvaluatioN scale (WHOMEN's scale), may be valuable to broader studies investigating the role of HAART optimism on reproductive intentions and sexual behaviours of HIV-positive women in high HIV prevalence settings.

HIV epidemiology in Greece

Greece has experienced early the effect of HIV/AIDS on morbidity and mortality. The era of highly active antiretroviral therapy has alleviated many of the consequences of the epidemic, however, HIV infection remains an issue of utmost significance. Men who have sex with men are the driving force of the HIV epidemic in Greece followed by heterosexually-infected individuals, while infections among injecting drug users remain at low levels. HIV-1 molecular epidemiology studies reveal a high genetic heterogeneity amongst the circulating strains in Greece. The epidemic began with subtype B, as in most of the European countries, however, subtype A was detected at a high prevalence among the newly diagnosed HIV-1-infected individuals in recent years. HIV requires an effective and sustained response meeting the needs of vulnerable subpopulations.

Vulnerability and non-adherence to antiretroviral therapy among HIV patients, Minas Gerais State, Brazil

The aim of the present study was to describe vulnerability profiles and to verify their association with non-adherence to antiretroviral therapy (ART) among 295 HIV-patients receiving their first prescription in two public-referral centers in Minas Gerais States, Brazil. The cumulative incidence of non-adherence was 36.9%. Three pure vulnerability profiles (lower, medium and higher) were identified based on the Grade of Membership method (GoM). Pure type patients of the "higher vulnerability" profile had, when compared to the overall sample, an increased probability of being younger, not understanding the need of ART, having a personal reason to be HIV-tested, not disclosing their HIV status, having more than one (non-regular) sexual partner, reporting use of alcohol, tobacco and illicit drugs, and having sex among men. Non-adherence to ART was statistically associated (p < 0.001) with this profile. Also, the heterogeneity of the sample was found to be high, since over 40% were mixed type. The implications are that health staff should be trained to develop strategies for incorporating risk-reduction interventions, bearing in mind the three dimensions of vulnerability and the diversity of those patients initiating antiretroviral therapy.

Mediators of childhood sexual abuse and high-risk sex among men-who-have-sex-with-men

OBJECTIVE

Mediators of childhood sexual abuse (CSA) and HIV risk behavior were examined for men-who-have-sex-with-men (MSM).

METHOD

Data from a dual frame survey of urban MSM (N=1078) provided prevalence estimates of CSA, and a test of two latent variable models (defined by partner type) of CSA-risk behavior mediators.

RESULTS

A 20% prevalence of CSA was reported. For MSM in secondary sexual relationships, our modeling work identified two over-arching but inter-related pathways (e.g., both pathways include effects on interpersonal skills) linking CSA and high-risk behavior: (1) CSA-Motivation-Scripts-Skills-Risk Behavior; and (2) CSA-Motivation-Coping-Risk Appraisal-Skills-Risk Behavior. For men in primary relationships, there was one over-arching pathway including CSA-Motivation-Coping-Risk Appraisal-Risk Behavior processes. Exploratory analyses indicated that men with a history of CSA in only primary relationships versus only secondary relationships had, for example, fewer motivational problems, and better coping and interpersonal skills.

CONCLUSIONS

CSA contributes to the ongoing HIV epidemic among MSM by distorting or undermining critical motivational, coping, and interpersonal factors that, in turn, influence adult sexual risk behavior. Further, the type of adult relationships men engage in serve as markers for adult CSA-related problems. The findings are discussed in the context of current theory and HIV prevention strategies.

PRACTICE IMPLICATIONS

Direct extrapolation from our findings to practice is limited. However, there are general implications that may be drawn. First, the complex challenges faced by men with severe CSA experiences may limit the effectiveness of typical short-term HIV risk reduction programs; more intensive treatment maybe needed. Secondly, Clinical Psychologists and Psychiatrists with MSM patients with CSA histories should, if not already, routinely consider issues of sexual health; patterns and types of sexual partners may be useful markers for identifying more problematic cases. Lastly, public service messages directed at destigmatizing CSA for MSM may increase use of health and mental health services.

Safer sexual behaviors after 12 months of antiretroviral treatment in Mombasa, Kenya: a prospective cohort

Roll-out of antiretroviral treatment (ART) raises concerns about the potential for unprotected sex if sexual activity increases with well-being, resulting in continued HIV spread. Beliefs about reduced risk for HIV transmission with ART may also influence behavior. From September 2003 to November 2004, 234 adults enrolled in a trial assessing the efficacy of modified directly observed therapy in improving adherence to ART. Unsafe sexual behavior (unprotected sex with an HIV-negative or unknown status partner) before starting ART and 12 months thereafter was compared. Participants were a mean 37.2 years (standard deviation [SD] = 7.9 years) and 64% (149/234) were female. Nearly half (107/225) were sexually active in the 12 months prior to ART, the majority (96/107) reporting one sexual partner. Unsafe sex was reported by half of those sexually active in the 12 months before ART (54/107), while after 12 months ART, this reduced to 28% (30/107). Unsafe sex was associated with nondisclosure of HIV status to partner; recent HIV diagnosis; not being married or cohabiting; stigma; depression and body mass index <18.5 kg/m(2). ART beliefs, adherence, and viral suppression were not associated with unsafe sex. After adjusting for gender and stigma, unsafe sex was 0.59 times less likely after 12 months ART than before initiation (95% confidence interval [CI] = 0.37-0.94; p = 0.026). In conclusion, although risky sexual behaviors had decreased, a considerable portion do not practice safe sex. Beliefs about ART's effect on transmission, viral load, and adherence appear not to influence sexual behavior but require long-term surveillance. Positive prevention interventions for those receiving ART must reinforce safer sex practices and partner disclosure.

The Cognitive Escape Scale: measuring HIV-related thought avoidance

Cognitive escape provides a model for examining the cognitive processes involved in escaping from thoughts of HIV/AIDS in a population of men who have sex with men (MSM). This investigation presents psychometric information and validation data on the Cognitive Escape Scale (CES), a measure of HIV-related cognitive avoidance. This study also examined the associations between the CES and self-report measures of theoretically related constructs, including HIV-related worry, sensation-seeking, depressive symptoms, perceived stress, and risky sexual behaviors. Participants were 709 MSM (71% White, 13% Latino, 8% African-American, 6% Native American; M age = 35). The CES measured HIV-related thought avoidance. Exploratory and confirmatory factor analyses supported a 3-factor structure to the CES, suggesting three strategies of cognitive escape: fatalism/short-term thinking, thought suppression/distraction, and alcohol/drug use. These factors are differentially related to several variables of interest including risky sexual behaviors. Although the CES is designed for use with both HIV negative and positive men, correlates differed between groups.

Changes in prevalence of HIV infection and sexual risk behavior in men who have sex with men in San Francisco: 1997 2002

OBJECTIVES

We assessed differences in HIV prevalence and sexual risk behavior among men who have sex with men (MSM) between 1997 and 2002 in San Francisco.

METHODS

We used 2 population-based random-digit-dial telephone surveys of MSM households in San Francisco in 1997 (n=915) and 2002 (n=879).

RESULTS

Estimated HIV prevalence increased from 19.6% in 1997 to 26.8% in 2002. Measures of sexual risk also increased. Unprotected anal intercourse with a partner of different or unknown HIV serostatus increased from 9.3% to 14.6%. Mean number of male partners increased from 10.7 to 13.8. The largest reported increase was 18.9% to 26.8% for "serosorting," or choosing unprotected anal intercourse partners believed to have the same HIV serostatus as oneself. Men aged 30 to 50 reported the largest increase in unprotected anal intercourse, whereas men aged 18 to 29 reported the largest increase in serosorting. Changes in the age distribution did not explain the increase in risky behavior.

CONCLUSIONS

Both HIV prevalence and sexual risk increased substantially among MSM in San Francisco between 1997 and 2002. Serosorting is being adopted more frequently than condom use by young MSM, but its effectiveness as a harm reduction strategy is not known.

Association between risk of acquiring HIV and beliefs and perceptions about the lived experience of HIV/AIDS among HIV-negative or untested men who have sex with men

The study aim was to assess whether the sexual behaviour of HIV-negative or untested men who have sex with men (MSM) was related to their perceptions of what it is like to live with HIV/AIDS, their beliefs or their attitudes to highly active antiretroviral treatments. Any unprotected anal intercourse (UAI) with casual partners was used as the sexual-risk indicator. The study enrolled 261 MSM. There were no significant differences between beliefs, attitudes and perceptions about HIV/AIDS, knowledge of post-exposure prophylaxis (PEP) or exposure to the HIV/AIDS epidemic among those who had had UAI with casual partners and those that had not (P>0.12). Those who considered that low levels of viral load and withdrawing before ejaculation reduced the risk of HIV transmission were significantly more likely to have had UAI with a casual partner (P=0.03). Only a minority of MSM engaging in UAI were optimistic about antiretroviral therapy. The study participants were in general pessimistic about life with HIV/AIDS despite their risk-taking sexual behaviour.

Prevalence of treatment optimism-related risk behavior and associated factors among men who have sex with men in 11 states, 2000-2001

Sustainable behavior change among men who have sex with men (MSM) may be threatened by optimistic beliefs about HIV treatments: treatment optimism has been associated with high risk sexual behaviors. We used data from behavioral surveys of MSM attending gay bars in 11 states from 2000-2001 to describe the prevalence and correlates of being less careful with sex or drugs because of treatment optimism (optimism-related risk behavior). Fifteen percent of 1477 HIV-negative or -untested MSM reported optimism-related risk behavior. Optimism-related risk behavior was reported more often by Black and Hispanic MSM (versus white), more often by MSM with a high school education or less (versus college), and less often by MSM in some states. HIV prevention programs should address treatment optimism and related behavioral risks by providing culturally appropriate information, accessible to MSM with lower educational attainment, about the limitations of current therapies.

Sexual behaviour of people living with HIV in London: implications for HIV transmission

OBJECTIVE

To examine the sexual behaviour of gay men as well as black African heterosexual men and women living with diagnosed HIV in London, and to consider the implications for HIV transmission.

METHODS

People living with HIV receiving treatment and care in outpatient clinics in north east London were asked to complete a confidential, self-administered questionnaire in 2004-2005. Respondents were asked about unprotected anal or vaginal intercourse in the previous 3 months, and the type (main or casual) and HIV status of their partner(s).

RESULTS

A total of 1687 people with diagnosed HIV returned a completed questionnaire (response rate 73% of eligible clinic attenders) including 480 black African heterosexual women, 224 black African heterosexual men and 758 gay/bisexual men (464 white, 112 ethnic minority). One in five gay men with HIV (20.1%, 144/715) reported unprotected anal intercourse with a partner of unknown or discordant HIV status (usually a casual partner). This presents a risk of HIV transmission. By comparison, one in 20 (5.1%, 32/623) black African heterosexual men and women with HIV reported unprotected vaginal intercourse that presented a risk of HIV transmission; odds ratio (gay men versus black African men and women combined) 5.28, 95% confidence interval 3.52, 7.91, P<0.001. Neither viral load nor being on HAART were significantly associated with unprotected intercourse among gay men or black African heterosexual men and women (P>0.05).

CONCLUSION

Behavioural research among people with diagnosed HIV in London shows that gay men are more likely than black African heterosexual men and women to engage in sexual behaviour that presents a risk of HIV transmission.

Association between 'safer sex fatigue' and rectal gonorrhea is mediated by unsafe sex with casual partners among HIV-positive homosexual men

OBJECTIVE

The objective of this study was to investigate whether and what sexual risk behavior is a mediator of associations between rectal gonorrhea (RG) and highly active antiretroviral therapy-related beliefs, safer sex fatigue, or sexual sensation-seeking among homosexual men.

STUDY DESIGN

This study consisted of a cross-sectional survey between March 2002 and December 2003 among homosexual visitors of the Amsterdam sexually transmitted disease clinic.

METHODS

In total, 1568 men answered a written questionnaire. Associations were determined using logistic regression corrected for repeated measurements.

RESULTS

The RG infection rate was high among homosexual men who were HIV-positive (16%) compared with those with negative or unknown HIV status. Mediation could be confirmed among HIV-positive men only. Those who experienced higher levels of safer sex fatigue were more likely to be positive for RG. This association was mediated by unprotected anal intercourse (UAI) with casual partners.

CONCLUSION

Addressing safer sex fatigue might help prevent UAI with casual partners and possibly also RG among HIV-positive homosexual men.

The search for social validation and the sexual behavior of people living with HIV in Rio de Janeiro, Brazil: Understanding the role of treatment optimism in context

The primary aim of this qualitative study was to explore the influence of HIV treatment optimism on the sexual behavior of people living with HIV/AIDS (PLWHA) receiving highly active anti-retroviral therapy (HAART) at public health clinics in Rio de Janeiro, Brazil. We also explored the psycho-social dynamics of participants' sexual relationships in order to understand more broadly how these factors influence the sexual behavior of PLWHA and how they shape HAART-related beliefs. Twenty-three semi-structured, in-depth interviews were conducted with three groups: heterosexual women, heterosexual men and men who have sex with men living with HIV who reported being sexually active in the last year and were currently receiving HAART. We found that the availability of HAART was conceptualized as a rationale for unsafe sex among a minority of study participants and that this was more common among men than among women. Specific examples of treatment optimism appeared to be employed as a means to avoid acknowledging how deeper psychosocial issues may have been influencing participant's sexual behavior. Most participants' sexual behavior appeared largely to be a product of their desire for social validation and linked to feelings of shame and denial, including but not limited to HIV. Participants from all three groups expressed a considerable amount of fear and/or anxiety regarding behaviors such as disclosure and condom use as a result of the unexplored conflict between implementing these behaviors and continuing with their strategies for social validation within the context of their sexual relationships. We conclude that short-term information, education and communication interventions surrounding treatment optimism, disclosure and condom use are appropriate and necessary; but that they are not sufficient to address the core challenges to unsafe sex among PLHWA. These deep-rooted psychosocial issues may be better addressed by longer-term individual and group-level opportunities for exploration and critical reflection regarding sense of self and its relationship to social solidarity among PLWHA.

Changing patterns of sexual behaviour in the era of highly active antiretroviral therapy

PURPOSE OF REVIEW

To describe changing patterns of sexual behaviour in the era of highly active antiretroviral therapy among gay/bisexual men in Europe, Canada, USA and Australia.

RECENT FINDINGS

While there has been a substantial increase in high-risk sexual behaviour among gay men since 1996, this now appears to be levelling off in some cities. Overall the empirical evidence does not support the suggestion that taking highly active antiretroviral therapy or having an undetectable viral load leads to risky sexual behaviour among people with HIV. Nor can HIV treatment optimism alone explain the recent increase in high-risk sexual behaviour. Since 1996, an increasing number of gay men have begun to use the Internet to look for sexual partners. By serosorting on the Internet, HIV-positive men are more likely to meet online, rather than off-line, other HIV-positive men for unprotected sex. While serosorting does not present a risk of HIV transmission to an uninfected person, it does present a risk of other sexually transmitted infections and co-infection with resistant virus for HIV-positive men themselves. This review also explores emerging behaviours such as barebacking and strategic positioning as well as the role of crystal meth and Viagra.

SUMMARY

The review reminds us of the complexity of human and sexual behaviour. Among gay men, sexual behaviour in the era of highly active antiretroviral therapy has been characterized by risk reduction and stabilization as well as increasing risk. These changing patterns provide a new challenge as well as new opportunities for HIV prevention.

The effects of HIV-related thought suppression on risk behavior: Cognitive escape in men who have sex with men

This study investigated the relationship between suppressing thoughts about HIV risk and several outcomes related to HIV risk, including sexual risk behavior and HIV prevention service use, in men who have sex with men (MSM). Synthesizing the ironic processing theory (D. M. Wegner, 1994) with a cognitive escape paradigm (D. J. McKiman, D. G. Ostrow, & B. Hope, 1996), it was hypothesized that thought suppression might increase risk by leading MSM to "escape" from sexual safety norms and engage in risky sex behaviors and, via a paradoxical process, increase future use of community prevention services. Results from a sample of MSM (N = 709) indicated that thought suppression was positively related to concurrent sexual risk behavior and to future use of prevention services.