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(2010)Journal ArticleSeveral candidate vaccines for hepatitis C are currently in preclinical development or the early stages of clinical trials. Implementing trials of these vaccines among people who inject drugs will be challenging. Previous research, particularly willingness to participate studies in relation to HIV vaccines in marginalised groups, has focused on the modifiable characteristics of individual participants. This qualitative research with people who inject drugs, health staff and clinicians focuses on social, organisational and structural elements of vaccine trial designs which may exclude or reduce the participation of people who inject drugs.
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(2010)Journal ArticlePapua New Guinea (PNG) is in a phase of scaling up access to antiretroviral therapy (ART), and adherence to the newly available drug therapy is becoming an important issue. This paper examines adherence to ART in a sample of 374 HIV-positive people in six provinces in PNG. Participants were recruited to the study using non-probability sampling. Sixty-two % of participants reported complete adherence (no missed or late doses in the past week) and 79% reported not missing any doses in the last week. Revival church members were significantly more likely to report having missing a treatment dose(s) (66%). Those living in the Highlands and those attending Catholic health clinics were significantly more likely to be adherent to their treatment. Age, gender, marital status, education level and employment type did not show significant association with treatment adherence. Adherence rates in PNG are not alarming, indicating that people with HIV can adhere to treatment despite the challenges of living in PNG.
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(2009)Journal ArticleBackground: HIV prevalence data suggest that men who have sex with men (MSM) in low-income and middle-income countries (LMIC) are at increased risk of HIV The aim of this article is to present global estimates on key HIV prevention needs and responses among MSM in LMIC. Methods: Data on HIV testing, HIV prevention coverage, HIV knowledge and condom use among MSM were derived from UNGASS country progress reports submitted in 2008. Eligible country estimates were used to calculate global and regional estimates, weighted for the size of MSM populations. Results: Of 147 LMIC, 45% reported at least 1 indicator that reflects the HIV prevention needs and responses in MSM. Global weighted estimates indicate that on average 31 % of MSM in LMIC were tested for HIV; 33% were reached by HIV prevention programs; 44% had correct HIV knowledge; and 54% used condoms the last time they had anal sex with a man. Conclusions: The 2008 UNGASS country reports represent the largest harmonized data set to date of HIV prevention needs and responses among MSM in LMIC. Although reporting is incomplete and does not always conform to requirements, findings confirm that, in many LMIC, HIV prevention responses in MSM need substantial strengthening.
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(2009)Journal ArticleWe explored seroguessing (serosorting based on the assumption of HIV seroconcordance) and casual unprotected anal intercourse (UAIC) associated with seroguessing. The ongoing Positive Health and Health in Men cohorts, Australia, provided data for trends in seroconcordant UAIC and HIV disclosure to sex partners. In event-level analyses, we used log-binomial regression adjusted for within-individual correlation and estimated prevalence rate ratios (PRRs) and 95% confidence intervals (95% CIs) for the association between the knowledge of a casual partner`s seroconcordance and UAIC. UAIC and HIV disclosure significantly increased during 2001-2006. HIV-positive men knew partners were seroconcordant in 54% and assumed it in 13% of sex encounters (42 and 17% among HIV-negative men). Among HIV-positive men, the likelihood of UAIC was higher when a partner`s status was known (Adjusted PRR = 5.17, 95% CI: 3.82-7.01) and assumed seroconcordant because of seroguessing (Adjusted PRR = 3.70, 95% CI: 2.56-5.35) compared with unknown. Among HIV-negative men, the likelihood of UAIC was also higher when a partner`s status was known (Adjusted PRR = 1.88, 95% CI: 1.58-2.24) and assumed seroconcordant (Adjusted PRR = 2.12, 95% CI: 1.72-2.62) compared with unknown. As levels of UAIC remain high, seroguessing increasingly exposes gay men to the risk of HIV infection. Because both HIV-positive and HIV-negative men often seroguess, education and prevention programs should address the fact that HIV-negative men who engage in UAI due to this practice may be at high risk of HIV infection. HIV prevention should take into account these contemporary changes in behaviors, especially among HIV-negative gay men.
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(2007)ReportGay Community Periodic Surveys surveys are regularly conducted in Sydney, Melbourne, Brisbane, Cairns, Canberra, Adelaide and Perth to monitor changes in sexual and other risk practices over time among Australian gay men who are gay community attached, recruited from gay sex-on-premises venues, social sites and clinics.
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(2004)Journal ArticleObjectives: To determine the prevalence and incidence of hepatitis A (HAV) and B (HBV) infection and vaccination in HIV-negative homosexual men in Sydney, and associated risk factors. Methods: An open prospective cohort study was conducted among a community-based sample of HIV-negative homosexual men in Sydney in 2001-02. Participants underwent a face-to-face interview, regarding demographics, sexual behavioural risk factors and sexually transmitted infections, and blood samples were collected. They were followed annually. Results: Nine hundred and three men completed a baseline interview by the end of 2002. Among them, 68% were seropositive to hepatitis A. The seroprevalence of prior hepatitis B infection was 19%, and 53% had serological evidence of HBV vaccination. Younger men were much more likely to be seronegative, with 48% and 46% of <25-year-olds being seronegative to HAV and HBV respectively. In multivariate analysis HAV and HBV infection were associated with increasing age, greater number of lifetime sex partners and HBV infection was also associated with previous sexually transmitted infections. HAV vaccination was associated with increasing age, greater number of lifetime sex partners, overseas travel in the last year and self-reported anogenital warts. HBV vaccination was associated with higher occupational status, greater lifetime number of sex partners and previous sexually transmitted infections. Conclusion: Substantial proportions of gay community attached young homosexual men are still at risk of HAV and HBV infection. This study points to a need for vaccination strategies which ensure high levels of hepatitis A and B immunity in young sexually active gay men.
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(2005)Journal Article