Loss to follow-up and HIV incidence in female sex workers in Kaiyuan, Yunnan Province China: a nine year longitudinal study.

BACKGROUND: Longitudinal studies of female sex workers (FSWs) are vulnerable to loss to follow-up (LTFU) due to this population's high mobility and low willingness to self-identify as FSWs. LTFU in cohort studies is a critical problem and may lead to bias in estimation of incidence and exposure-outcome associations. The aim of this study was to analyze LTFU and HIV incidence and their associated factors in a 9-year longitudinal study of FSWs in Kaiyuan, Yunnan Province, China. METHODS: This analysis includes all HIV-1 seronegative FSWs who were recruited into a prospective study in Kaiyuan with at least one follow-up visit after enrollment from March 2006 to November 2013. Participants were visited in 6-month intervals after enrollment. Their demographic and behavioral data and blood specimens for HIV and sexual transmitted disease testing were collected at enrollment and at each follow-up visit. The administrative censoring date was December 31, 2014. Participants were considered LTFU if their last visit occurred 1 year or more before the administrative censoring date. Univariate and multivariable Cox regression models with time-independent variables were used to investigate the hazard ratios (HR) and 95 % confidence intervals (CI) of the factors associated with LTFU and HIV acquisition. RESULTS: Of the 1158 FSWs, 950 were defined as LTFUs (LTFU rate: 29.69, 95 % CI: 27.85-31.62 per 100 person years [PYs]), and 33 experienced HIV seroconversions (cumulative incidence: 1.06, 95 % CI: 0.74-1.47 per 100 PYs). After adjustment, we found that FSWs who used drugs were less likely to be LTFU compared with non-drug users (adjust hazard ratio [AHR]= 0.62, 95 % CI: 0.51-0.76), though FSWs who used drug were associated with a higher risk of HIV acquisition (AHR = 3.06, 95 % CI: 1.49-6.30). Also, FSWs who always used condoms with clients in the previous month were associated with a higher risk of LTFU (AHR = 1.51, 95 % CI: 1.15-1.97), while they were negative associated with new HIV infection (AHR = 0.28, 95 % CI: 0.12-0.61). CONCLUSIONS: A high LTFU rate exists in the Kaiyuan FSW cohort study, and LTFU did not occur at random. Participants retained in the cohort tended to be at higher risk of HIV acquisition, which may result in an overestimate of the incidence of HIV infection from the Kaiyuan FSW cohort.

HIV treatment as prevention: contradictory perspectives from dynamic mathematical models.

The preventative effects of antiretroviral therapy for people with HIV have been debated since they were first raised. Models commenced studying the preventive effects of treatment in the 1990s, prior to initial public reports. However, the outcomes of the preventive effects of antiretroviral use were not consistent. Some outcomes of dynamic models were based on unfeasible assumptions, such as no consideration of drug resistance, behavior disinhibition, or economic inputs in poor countries, and unrealistic input variables, for example, overstated initiation time, adherence, coverage, and efficacy of treatment. This paper reviewed dynamic mathematical models to ascertain the complex effects of ART on HIV transmission. This review discusses more conservative inputs and outcomes relative to antiretroviral use in HIV infections in dynamic mathematical models. ART alone cannot eliminate HIV transmission.

Prevalence and risk factors of hepatitis C and B virus infections in hemodialysis patients and their spouses: a multicenter study in Beijing, China.

Hemodialysis patients are at risk for hepatitis C and B virus infections. This study investigated the prevalences and risk factors of HCV and HBV infection and the distribution of HCV genotypes among hemodialysis patients and their spouses. From August to November 2011, a cross-sectional study was conducted on 20 hemodialysis units in Beijing to investigate prevalences and risk factors for markers of HCV and HBV among 2,120 patients and 409 spouses. In hemodialysis patients, prevalences of anti-HCV, HCV RNA, and hepatitis B surface antigen (HBsAg) were 6.1%, 4.6%, and 7.0%, respectively. The prevalence of HCV antibodies among spouses was 0.5%, of HCV RNA was 0.2%, and of HBsAg was 4.2%. Risk factors for HCV infection were dialysis duration, blood transfusion, and attending more than one dialysis unit. HBV infection was independently associated with age, family member with hepatitis infection, gender, and surgery. The predominant HCV genotypes were 1b (89.0%) and 2a (7.7%), and genotypes 3a, 3b, and 6a were each 1.1%. A significant decrease in HCV and HBV prevalences in Chinese dialysis units showed that infection control measures were effective. However, because nosocomial transmissions persist, strict adherence to infection control measures should be emphasized to reduce the risk of transmission.

Building a professionalism framework for healthcare providers in China: a nominal group technique study.

BACKGROUND: Medical professionalism is valued globally. However, Western frameworks of medical professionalism may not resonate with the cultural values of non-Western countries. AIMS: This study aims to formulate a professionalism framework for healthcare providers at Peking Union Medical College (PUMC) in China. METHODS: This study was conducted using nominal group technique (NGT) in a convenient sample of 97 participants at PUMC in November and December, 2011. Participants were sorted into 13 occupational groups, each discussing and ranking categories of medical professionalism. The authors compared the results of each group's ranked categories and analyzed meeting transcripts. RESULTS: A pre-existing framework provided eight categories: clinical competence, communication, ethics, humanism, excellence, accountability, altruism, and integrity. Participants created four categories: teamwork, self-management, health promotion, and economic considerations. Clinical competence and communication ranked highly among most groups. Only hospital volunteers and resident physicians included self-management in their top-ranked items. Only public health experts prioritized health promotion. Standardized patients were unique in mentioning "economic considerations." Medical students and attending physicians both referenced Chinese traditional values. CONCLUSIONS: Our study was able to document effects of East Asian cultural influences and conflicts between Western ideologies and Asian traditions that led to divergent interpretations of medical professionalism.

HIV seroconversion and prevalence rates in heterosexual discordant couples in China: a systematic review and meta-analysis.

This study aims to systematically review published literature on heterosexual transmission among HIV discordant couples in China. We conducted a systematic review and random-effects meta-analysis of 32 published articles in both Chinese and English. The summarized overall HIV seroconversion rate among discordant couples in China is 1.2 per 100 person-years (95% CI 0.9-1.7/100 PY). The overall estimate for HIV prevalence through heterosexual transmission in discordant couples is 11.5% (95% CI 8.2%-15.2%) in China. In a stratified meta-analysis by region, Henan province showed an HIV seroconversion rate of 0.9/100 PY (95% CI 0.6-1.2/100 PY) and an HIV prevalence rate of 3.9% (95% CI 2.5-5.7%). Yunnan province showed an HIV seroconversion rate of 1.7/100 PY (95% CI 1.2-2.3/100 PY) and an HIV prevalence rate of 17.0% (95% CI 13.7-20.6%). Other provinces collectively showed a HIV seroconversion rate of 3.9/100 PY (95% CI 1.0-8.7/100 PY) and an HIV prevalence rate of 21.5% (95% CI 9.6-36.5%). In a stratified meta-analysis by time, the subgroup from 1994 to 2004 had a seroconversion rate of 3.9/100 PY (95% CI 1.0-8.7/100 PY) and the subgroup from 2005 to 2011 had a seroconversion rate of 1.1/100 PY (95% CI 0.8-1.5/100 PY). These data show that China's free national HIV prevention and treatment program has been successful at limiting transmission in discordant couples. Because heterosexual transmission is now the dominant method of HIV transmission in China, it is important to understand seroconversion and prevalence rates in discordant couples to develop more effective prevention and treatment programs.

Herpes simplex virus type 2 risks in female sex workers in the China-Vietnam border county of Hekou.

OBJECTIVE: To survey the prevalence and risk factors of HSV-2 among Chinese and Vietnamese female sex workers (FSW) in the border county of Hekou, Yunnan Province, China. METHODS: A cross-sectional survey was conducted on demographics, sexual behavior, medical history, and drug use among FSWs. Laboratory samples were obtained to test for HSV-2 and other STIs such as HIV, Syphilis, Trichomonas vaginalis, Neisseria gonorrhoeae, Chlamydia trachomatis, Bacterial vaginosis, and Yeast infections. Cervicitis and genital warts were also diagnosed. RESULTS: Of the 345 FSWs who participated in this study, 112 (32.5%) were ethnic Chinese and 233 (67.5) were Vietnamese. Among FSWs in Hekou, the prevalence rates were 58.3% for HSV-2, 5.5% for HIV, and 4.1% for bacterial vaginosis (BV). Age<21 (OR: 0.5; 95% CI: 0.3, 0.8), duration of commercial sex work≤3 months (OR: 0.5; 95% CI: 0.3, 0.8), oral and vaginal sex with the last client (as opposed to only vaginal sex) (OR: 1.6; 95% CI: 1.0, 2.7), HIV (OR: 11.4; 95% CI: 1.5, 87.2), and bacterial vaginosis (BV) (OR: 5.6; 95% CI: 1.2, 26.9) were significantly correlated with HSV-2 infection. CONCLUSION: Multivariate analysis showed that several factors were significantly correlated with the high prevalence of HSV-2 in FSWs in the border area between China and Vietnam. Further studies and interventions are needed for HSV-2 epidemiology in the border area.

Effects of hospital accreditation on medical students: a national qualitative study in Taiwan.

PURPOSE: Hospital accreditation has become a global trend for improving the quality of health care services. In Taiwan, nearly all hospitals are accredited. However, there is a paucity of literature on the effects of hospital accreditation on medical students and the universal applicability of hospital accreditation as developed in the West. The purpose of this study was to investigate the effects of hospital accreditation on medical students in Taiwan. METHOD: From 2010 to 2012, the authors conducted semistructured interviews with 34 senior, clinical year students at 11 different medical schools in Taiwan. Following a grounded theory approach, the authors transcribed and analyzed the transcripts concurrently with data collection in order to identify emergent themes. RESULTS: Aside from the intended positive effects of hospital accreditation, this study revealed several unintended impacts on medical students, including decreased clinical learning opportunities, increased trivial workload, and violation of professional integrity. Taiwanese students expressed doubt and frustration concerning the value of hospital accreditation and reflected on the cultural and systemic context in which accreditation takes place. Their commentary addressed the challenges associated with the globalization of hospital accreditation processes. CONCLUSIONS: This study suggests that, beyond the improvement of patient safety and quality assurance, medical educators must recognize the unintended negative effects of hospital accreditation on medical education and take into account differences in culture and health care systems amid the globalization of medicine.

A tale of two cities: understanding the differences in medical professionalism between two Chinese cultural contexts.

PURPOSE: To compare stakeholders' constructs of medical professionalism in two Chinese cultural contexts. METHOD: Between November and December 2011, the authors adopted the nominal group technique (NGT) to elicit professional competencies valued by 97 medical education stakeholders at Peking Union Medical College (PUMC) in Beijing, China. Participants categorized the professional competencies according to an existing framework developed at National Taiwan University College of Medicine (NTUCM) in Taipei, Taiwan; they also modified and developed new categories for the framework. The authors analyzed NGT transcripts to construct a visual medical professionalism framework for PUMC and compared it with that of NTUCM. RESULTS: The Chinese stakeholders endorsed seven of the eight competencies identified in the Taiwanese framework: clinical competence, communication, ethics, humanism, excellence, accountability, and altruism. For the eighth competency, integrity, the Chinese participants preferred the term "morality." They also added the competencies of teamwork, self-management, health promotion, and economic considerations. Both frameworks differed from typical Western professionalism frameworks in emphasizing morality and the integration of social and personal roles. CONCLUSIONS: The resemblance between the Chinese and Taiwanese frameworks in the prominence of morality and integrity suggests the influence of Confucianism. The exclusively Chinese articulations of teamwork, health promotion, and economic considerations appear to derive from social, political, and economic factors unique to Mainland China. This study demonstrates the dynamic influence of cultural values, social history, and health care systems on the construction of medical professionalism frameworks and calls for further research to adapt global frameworks to fit specific local contexts.

Incidence of hepatitis C virus infection in patients on hemodialysis: a systematic review and meta-analysis.

Hepatitis C virus infection is a perennial concern for hemodialysis units because the prevalence of hepatitis C is significantly higher there than in the general population. Through a systematic review and meta-analysis, we aim to assess the incidence rate of hepatitis C virus infection in hemodialysis units and explore its potential risk factors. Five electronic databases were used to search articles from 1990 to 2012, including PubMed, Embase, China National Knowledge Infrastructure, Chinese Biomedical Literature Database, and Wanfang. A random-effects analysis was used to estimate the overall incidence rate of hepatitis C virus infection. A subgroup analysis and meta-regression analysis were conducted to explore factors associated with heterogeneity between studies. Twenty-two eligible articles were found, including 23 incidence rate estimates. The overall incidence rate of hepatitis C virus infection was 1.47 per 100 patient-years (95% confidence interval [CI] 1.14 to 1.80). In the subgroup analysis, the pooled incidence rate was 4.44 (CI 2.65, 6.23) per 100 patient-years in the developing world and 0.99 (CI 0.66, 1.29) per 100 patient-years in the developed world. [Correction added on 2 November 2012, after first online publication: Pooled incidence rate in the developed world has been changed.] In addition, in hemodialysis units with higher prevalence, the incidence rate of hepatitis C virus infection also tended to be higher. Meta-regression analysis showed that the country's development level and initial HCV prevalence combined could explain 67.91% of the observed heterogeneity. The incidence rate of hepatitis C virus infection among patients on hemodialysis was significantly high. Efforts should be taken to control hepatitis C virus infection in hemodialysis units, especially in developing countries.

Health-related attitudes and risk factors for sexually transmitted infections of Chinese women who have sex with women.

BACKGROUND: Previous studies have shown evidence of health-related risk behaviors among women who have sex with women (WSW), such as sex with men, multiple bisexual partners, and drug use. Women who have sex with women have also been known to avoid routine physical examinations and conceal their same-sex history from physicians, which can affect their ability to receive an accurate diagnosis and treatment. No previous research has targeted women who have sex with women in China. We sought to describe women who have sex with women in China and explore risk factors for their reproductive tract infections (RTI)/sexually transmitted infections (STI). METHODS: Participants were recruited through outreach in venues and online for a cross-sectional study. Data were collected using interviews and laboratory tests. RESULTS: We recruited 224 women who have sex with women. In the year preceding their participation in the study, 92% (206/224) of women reported sexual relations with women. The RTI rates were: gonorrhea (15.8%), chlamydia (3.5%), syphilis (0.5%), bacterial vaginosis (14.4%), hepatitis B virus (HBV) (0.9%), hepatitis C virus (HCV) (0.5%), and candidiasis (6.9%). No HIV or herpes simplex virus (HSV) positive cases were detected. Factors associated with gonorrhea infection were non-Beijing local residency (odds ratio (OR) = 2.1, 95% confidence interval (CI): 1.2 - 3.8) and genital-genital contact (OR = 3.1, 95%CI: 1.3 - 7.2); factors associated with curable STI (excluding bacterial vaginosis, candidiasis, HBV and HCV) were non-Beijing local residency (OR = 1.9; 95%CI: 1.2 - 3.0) and bleeding during or after sex (OR = 18.1; 95%CI: 5.2 - 62.6); and the factor associated with RTI (including all the infections tested) was bleeding during or after sex (OR = 37.8, 95%CI: 11.2 - 127.4). CONCLUSIONS: Behaviors that may cause RTI/STI exist among Chinese women who have sex with women. Researchers should consider these behaviors when planning corresponding prevention and interventions.

Risk behaviors for reproductive tract infection in women who have sex with women in Beijing, China.

OBJECTIVES: To assess risk behaviors for reproductive tract infections (RTI) including sexually transmitted infections (STI) among women who have sex with women (WSW) in Beijing, China. METHODS: A cross-sectional study of women recruited from venues and internet outreach analyzed using interviews. RESULTS: We recruited 224 WSW, among whom were 37 couples. The average age of participants was 25.6 years. Sex with men in the past year was reported by 10.7% of participants. During the past year, 34.3% (77/224) had had >1 sexual partner and 72.4% (162/224) had ever had >1 sexual partner. Condom use in the last sex with a man was reported by 54.2% (13/24) of women; 12.5% (3/24) reported never having used a condom with a man in the past year. In the past year, 13.4% (30/224) reported using sex toys with their female partners; of these, 43.3% (13/30) reported consistent condom use with the sex toys and 36.7% (11/30) had shared sex toys. Among participants 65.2% (120/184) reported that their "G-spot" had been stimulated during sex, 49.2% (59/120) of whom reported bleeding during or after sex. Only 12.5% (8/64) of those never reporting "G spot" stimulation reported bleeding during or after sex (P<0.001). CONCLUSIONS: WSW in Beijing engaged in high-risk sexual behaviors that may carry a substantial risk of being infected with STI/RTI. To implement STI/RTI prevention and intervention among women, women-women sexual behavior should be considered when doing research and intervention programs.

HIV prevalence and influencing factors analysis of sentinel surveillance among men who have sex with men in China, 2003 - 2011.

BACKGROUND: Men who have sex with men (MSM) have been impacted by HIV and now as an important driver of the HIV/AIDS epidemic in China. This study collected HIV sentinel surveillance system data on the MSM population to describe the characteristics and trends of the HIV epidemic among MSM in China from 2003 to 2011. METHODS: Data on HIV prevalence and risk behaviors from 2003 to 2011 were obtained from the national HIV sentinel surveillance database. RESULTS: MSM sentinel surveillance data for 2011 showed that proportions of MSM who consistently used condoms during anal sex in the last six months and at last anal sex encounter were 43.3% and 74.1%, respectively. Between 2005 and 2011 there were no significant changes in the proportion of consistent condom use. The proportion of MSM who had multiple male sex partners in the last six months increased. Overall HIV prevalence over the years showed a rising trend from 0.9% in 2003 to 6.3% in 2011. The syphilis antibody positive rate was 7.8% in 2011. In addition, the proportion of MSM in heterosexual marriages was rising, AIDS awareness was also increasing, and the proportion of MSM who had taken an HIV test in the last year and was aware of the results rose. The proportion who had received intervention services in the last year stabilized. CONCLUSIONS: HIV prevalence in MSM populations is rapidly and widely distributed. MSM who are in heterosexual marriages may be a bridge group transmitting HIV to their heterosexual partners. The risky sexual behavior among MSM will remain a serious and important driver of China's AIDS epidemic over the next period of time. Intervention need to be strengthened, as does the effective implementation of measures to control AIDS and prevent it from spreading further.