A rapidly increasing incidence of HIV and syphilis among men who have sex with men in a major city of China.
ABSTRACT The number of newly reported cases of HIV has significantly increased among men who have sex with men (MSM) in China over the past five years. Unfortunately, there have been few studies reporting incidence rates and related trends in MSM populations. This study addresses the lack of information on HIV incidence trends among MSM in Shenyang, Liaoning. Cross-sectional and prospective cohort studies implemented by our laboratory in 2006 found high prevalence and high incidence of HIV among MSM. . This study, a three-year prospective open cohort follow-up survey, examines trends in HIV prevalence and incidence of both HIV and syphilis infections among MSM in Shenyang, Liaoning.
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ABSTRACT: China has experienced an increasing epidemic of sexually transmitted infections (STIs), including HIV. High risk groups likely to be infected include female sex workers (FSWs) and their clients, men who have sex with men (MSM), drug users and migrant workers. Prevention can be achieved through education of the population, condom promotion, early detection of symptomatic and asymptomatic people, and effective diagnosis and treatment of these patients and their partners. This article aims to describe the profile of the epidemic in high-risk groups in China as well as to detail the contributing factors and the implications for control. Programmes for the control of STIs should be immediate priorities in China, and primary and secondary prevention strategies are vital to this process.BMC Medicine 10/2011; 9:111. DOI:10.1186/1741-7015-9-111 · 7.28 Impact Factor
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ABSTRACT: Advances in communication technology may affect networking pattern, thereby influencing the dynamics of sex partnership. The aim of the study is to explore the impacts of partner sourcing through internet and related channels on exposure risk to sexually transmitted infections (STI) including HIV. Using venue-based sampling, a cross-sectional questionnaire survey was conducted at saunas frequented by men having sex with men (MSM) in Hong Kong. Comparison was made between MSM sourcing partners through physical venues alone versus concomitant users of physical and virtual channels, the latter referring to internet and smart-phone applications, using bivariate logistic regression. Over a 7-week study period, 299 MSM were recruited from 9 saunas. Three main types of sex partners were distinguished: steady (46.8%), regular (26.4%) and casual (96.0%) partners. Users of sauna (n = 78) were compared with concomitant users of saunas and virtual channels (n = 179) for partner sourcing. Sauna-visiting virtual channel users were younger and inclined to use selected physical venues for sourcing partners. Smart-phone users (n = 90) were not different from other internet-users in terms of age, education level and single/mixed self-identified body appearance. Classifying respondents into high risk and low risk MSM by their frequency of condom use, concomitant use of both sauna and virtual channels accounted for a higher proportion in the high risk category (71.6% vs. 58.2%, OR = 1.81, p<0.05). In virtual channel users, partner sourcing through smart-phone was not associated with a higher practice of unprotected sex. MSM sauna customers commonly use virtual channels for sex partner sourcing. Unprotected sex is more prevalent in sauna customers who use virtual channel for sex partner sourcing. While the popularity of smart-phone is rising, its use is not associated with increased behavioural risk for HIV/STI transmission.PLoS ONE 02/2012; 7(2):e31072. DOI:10.1371/journal.pone.0031072 · 3.53 Impact Factor
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ABSTRACT: Rapid increase in the number of HIV cases in the men who have sex with men (MSM) population has been observed in China, however, little information was available on genetic characterization of HIV prevalent in this population. In this study, 95 HIV-1 sero-positive drug-naïve patients from Beijing MSM population were enrolled. Genetic characterization and transmission of drug-resistance of HIV-1 were examined based on full-length gag, pol, and partial env gene sequences. Three subtypes, including CRF01_AE (56.0%), B (30.8%) and CRF07_BC (12.6%) were identified. Close phylogenetic relationships were found among these strains with isolates from other populations in Beijing and MSM isolates from Hebei province, which suggested that Beijing MSM population might act as a bridge for HIV transmission between MSM and other high risk populations. Drug resistant mutations were identified in 5.3% of sampled individuals. Our results provided detailed genetic data and would be helpful for understanding the transmitting pattern of HIV strains between MSM and other populations.AIDS research and human retroviruses 11/2012; DOI:10.1089/AID.2012.0281 · 2.46 Impact Factor