2020
HIV Seroconversion and Types of Relationships Among Men Who Have Sex With Men: A Cohort Study in China.
Sun X, Wang C, Zhao K, Zhang L, Li M, Sun D, Shu W, Ruan Y, Zhang J, Vermund SH, Li D, Hu Y. HIV Seroconversion and Types of Relationships Among Men Who Have Sex With Men: A Cohort Study in China. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2020, 83: 365-372. PMID: 31913999, PMCID: PMC7055498, DOI: 10.1097/qai.0000000000002264.Peer-Reviewed Original ResearchConceptsHIV seroconversionSeroconversion riskHIV seroconversion ratesHIV seroconversion riskMultivariable Cox regressionHIV-negative menIncident HIV infectionRegular sexual partnersRelative excess riskUnprotected anal sexSexual behaviorLast sexual encounterUnsafe sexual behaviorSafer sex educationSeroconversion ratesCohort studyHIV infectionRisky sexual behaviorHIV statusCox regressionExcess riskRisk factorsRegular partnersLow educational attainmentCasual partners
2018
Risk Prediction Score for HIV Infection: Development and Internal Validation with Cross-Sectional Data from Men Who Have Sex with Men in China
Yin L, Zhao Y, Peratikos MB, Song L, Zhang X, Xin R, Sun Z, Xu Y, Zhang L, Hu Y, Hao C, Ruan Y, Shao Y, Vermund SH, Qian HZ. Risk Prediction Score for HIV Infection: Development and Internal Validation with Cross-Sectional Data from Men Who Have Sex with Men in China. AIDS And Behavior 2018, 22: 2267-2276. PMID: 29786768, PMCID: PMC7024582, DOI: 10.1007/s10461-018-2129-y.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAlcohol DrinkingChinaCondomsCross-Sectional StudiesHIV InfectionsHomosexuality, MaleHumansLogistic ModelsMaleMiddle AgedMultivariate AnalysisPrevalenceRisk AssessmentRisk FactorsRisk-TakingSafe SexSexual and Gender MinoritiesSexual BehaviorSexual PartnersSurveys and QuestionnairesSyphilisUnsafe SexYoung AdultConceptsHIV infectionRisk scoreHuman immunodeficiency virus (HIV) riskMultivariable logistic regression modelingBootstrap-corrected C-indexMultiple male sexual partnersValid risk scoreVaccine clinical trialsHigh-risk MSMHigh-risk personsRisk prediction scoreReceptive anal intercourseReceptive anal sexInconsistent condom useMale sexual partnersHIV prevention programmingLogistic regression modelingDrug/alcohol addictionHIV acquisitionRisk reduction programsSyphilis infectionHIV prevalenceClinical trialsC-indexIllegal drug use
2017
Human Immunodeficiency Virus Status Differentially Associated With Genital and Anal Human Papillomavirus Infection Among Chinese Men Who Have Sex With Men
Qian HZ, Hu Y, Carlucci JG, Yin L, Li X, Giuliano AR, Li D, Gao L, Shao Y, Vermund SH. Human Immunodeficiency Virus Status Differentially Associated With Genital and Anal Human Papillomavirus Infection Among Chinese Men Who Have Sex With Men. Sexually Transmitted Diseases 2017, 44: 656-662. PMID: 28876311, PMCID: PMC5719885, DOI: 10.1097/olq.0000000000000672.Peer-Reviewed Original ResearchConceptsHuman immunodeficiency virus statusAnal HPVHuman papillomavirus infectionOncogenic HPV typesGenital HPVHIV seropositivityPapillomavirus infectionHPV typesVirus statusAnal siteAnatomic sitesAnal sexAnal human papillomavirus (HPV) infectionInsertive anal sexReceptive anal sexCross-sectional studyInconsistent condom useUninfected MSMHPV genotypingMiddle-income countriesHIV serostatusHuman papillomavirusChinese MSMHPVChinese men
2016
Substance use and HIV-risk behaviors among HIV-positive men who have sex with men in China: repeated measures in a cohort study design
Zhang C, Liu Y, Sun X, Wang J, Lu HY, He X, Zhang H, Ruan YH, Shao Y, Vermund SH, Qian HZ. Substance use and HIV-risk behaviors among HIV-positive men who have sex with men in China: repeated measures in a cohort study design. AIDS Care 2016, 29: 644-653. PMID: 27832699, PMCID: PMC5350012, DOI: 10.1080/09540121.2016.1255709.Peer-Reviewed Original ResearchConceptsHIV risk behaviorsCohort study designSubstance useStudy designHIV-positive MSMHIV-positive menGeneralized Estimating Equation modelsFemale sex partnersRapid HIV transmissionMale sexual partnersRigorous study designsSexual risk behaviorsCurrent studySeronegative counterpartsSeropositive menSeropositive partnersHIV transmissionMean agePotential confoundersRisk factorsHigh riskRisk populationsSex partnersUnprotected sexRisk behaviorsAlcohol misuse, risky sexual behaviors, and HIV or syphilis infections among Chinese men who have sex with men
Liu Y, Ruan Y, Strauss SM, Yin L, Liu H, Amico KR, Zhang C, Shao Y, Qian HZ, Vermund SH. Alcohol misuse, risky sexual behaviors, and HIV or syphilis infections among Chinese men who have sex with men. Drug And Alcohol Dependence 2016, 168: 239-246. PMID: 27723554, PMCID: PMC5523945, DOI: 10.1016/j.drugalcdep.2016.09.020.Peer-Reviewed Original ResearchConceptsAlcohol Use Disorders Identification Test-ConsumptionSyphilis infectionBinge drinkersChinese menAlcohol misuseCondomless insertive anal intercourseHIV/syphilis infectionRecent alcohol misuseAlcohol risk reduction programCross-sectional studyInsertive anal intercourseAUDIT-C scoresCurrent alcohol dependenceInterviewer-administered surveyHigh-risk behaviorsRisk reduction programsRisky sexual behaviorMisuse MeasureHIV riskChinese MSMAnal intercourseHigh riskSyphilis riskBinge drinkingHazardous drinkersAssociations of current marital status and living arrangements with HIV and syphilis risk: findings from a community-based sample of men who have sex with men in China
Liu Y, Li D, Vermund SH, Zhang C, Ruan Y, Yin L, Liu H, Amico KR, Shao Y, Qian HZ. Associations of current marital status and living arrangements with HIV and syphilis risk: findings from a community-based sample of men who have sex with men in China. AIDS Care 2016, 28: 1461-1466. PMID: 27236988, PMCID: PMC5344671, DOI: 10.1080/09540121.2016.1189502.Peer-Reviewed Original ResearchConceptsMale sex partnersSingle MSMSyphilis riskMarital statusCurrent marital statusSex partnersMultivariable logistic regression modelingReceptive anal intercourseCondomless vaginal sexCross-sectional studyLogistic regression modelingCommunity-based sampleHIV-positiveChinese MSMAnal intercourseLower oddsChinese menMarried MSMVaginal sexRisk reduction strategiesSexual partnersInfection statusMSMHIVInfection prevalenceSeeking Male Sexual Partners via Internet and Traditional Venues among Chinese Men Who Have Sex with Men: Implications for HIV Risk Reduction Interventions
Liu Y, Wang J, Qian HZ, Liu H, Yin L, Lu H, Zhang C, Ruan Y, Shao Y, Vermund SH. Seeking Male Sexual Partners via Internet and Traditional Venues among Chinese Men Who Have Sex with Men: Implications for HIV Risk Reduction Interventions. AIDS And Behavior 2016, 20: 2222-2230. PMID: 27000143, PMCID: PMC7784627, DOI: 10.1007/s10461-016-1371-4.Peer-Reviewed Original ResearchConceptsMale sexual partnersChinese menSexual partnersHIV risk reduction interventionsCondomless receptive anal sexReceptive anal sexRisk reduction interventionsBehaviors of MSMCross-sectional surveyHigh-risk behaviorsHIV epidemicChinese MSMAnal sexReduction interventionsMSMSociodemographic predictorsLonger durationSexMenInterventionHigher incomeHIVTraditional venues
2015
Poppers use and risky sexual behaviors among men who have sex with men in Beijing, China
Zhang H, Teng T, Lu H, Zhao Y, Liu H, Yin L, Sun Z, He X, Qian HZ, Ruan Y, Shao Y, Vermund SH. Poppers use and risky sexual behaviors among men who have sex with men in Beijing, China. Drug And Alcohol Dependence 2015, 160: 42-48. PMID: 26796594, PMCID: PMC5321169, DOI: 10.1016/j.drugalcdep.2015.11.037.Peer-Reviewed Original ResearchConceptsHIV infectionAnal intercourseMultivariable logistic regression analysisUnprotected receptive anal intercourseSexual behavioral factorsHigh HIV prevalenceReceptive anal intercourseMultiple male sex partnershipsLogistic regression analysisHIV intervention trialsQuarter of menUnprotected anal intercourseSexual behaviorTypes of drugsHIV testingRisky sexual behaviorHIV prevalenceIntervention trialsBlood samplesYounger ageMale partnersAlcohol useMSMSex partnershipsSafer sex
2014
Methadone Maintenance Therapy and HIV Counseling and Testing are Associated with Lower frequency of Risky Behaviors Among Injection Drug Users in China
Wang M, Mao W, Zhang L, Jiang B, Xiao Y, Jia Y, Wu P, Cassell H, Vermund S. Methadone Maintenance Therapy and HIV Counseling and Testing are Associated with Lower frequency of Risky Behaviors Among Injection Drug Users in China. Substance Use & Misuse 2014, 50: 15-23. PMID: 25295376, DOI: 10.3109/10826084.2014.957768.Peer-Reviewed Original ResearchConceptsMethadone maintenance therapyInjection drug usersMaintenance therapyDrug usersConsecutive cross-sectional surveysHIV voluntary counselingUnprotected sexual behaviorCross-sectional surveyRisky behaviorsHIV counselingVoluntary counselingNeedle sharingUnprotected sexMMT servicesSignificant associationVCTLast monthSexual behaviorTherapyCounselingHIV Risk Perception among HIV Negative or Status‐Unknown Men Who Have Sex with Men in China
Fan W, Yin L, Qian HZ, Li D, Shao Y, Vermund SH, Ruan Y, Zhang Z. HIV Risk Perception among HIV Negative or Status‐Unknown Men Who Have Sex with Men in China. BioMed Research International 2014, 2014: 232451. PMID: 24795880, PMCID: PMC3985141, DOI: 10.1155/2014/232451.Peer-Reviewed Original ResearchConceptsHIV risk perceptionSelf-perceived riskHIV infectionHigh riskMultivariate logistic regression modelLow self-perceived riskCross-sectional studySelf-reported historyHIV/AIDS epidemicIllicit drug useLogistic regression modelsHIV-negativeHIV testingHIV statusSyphilis testingBeijing MSMChinese MSMHIV perceptionBlood samplesLower riskDrug useHIVMSMUnknown statusAIDS epidemicEfficacy of Peer-Led Interventions to Reduce Unprotected Anal Intercourse among Men Who Have Sex with Men: A Meta-Analysis
Ye S, Yin L, Amico R, Simoni J, Vermund S, Ruan Y, Shao Y, Qian HZ. Efficacy of Peer-Led Interventions to Reduce Unprotected Anal Intercourse among Men Who Have Sex with Men: A Meta-Analysis. PLOS ONE 2014, 9: e90788. PMID: 24614809, PMCID: PMC3948720, DOI: 10.1371/journal.pone.0090788.Peer-Reviewed Original ResearchConceptsPost-intervention studyUnprotected anal intercourseCross-sectional intervention studyPeer-led interventionsStandardized mean differenceIntervention studiesQuasi-experimental studyAnal intercourseHIV prevention interventionsCross-sectional assessmentNon-significant reductionPre-post interventionEffect sizeMore RCTsSubgroup analysisClinical trialsPrevention interventionsEligibility criteriaControl groupElectronic databasesSystematic reviewMeta-AnalysisSexual partnersMean differenceRCTs
2012
Risk Behaviors for Reproductive Tract Infection in Women Who Have Sex with Women in Beijing, China
Wang X, Norris JL, Liu Y, Vermund SH, Qian HZ, Han L, Wang N. Risk Behaviors for Reproductive Tract Infection in Women Who Have Sex with Women in Beijing, China. PLOS ONE 2012, 7: e40114. PMID: 22768334, PMCID: PMC3388038, DOI: 10.1371/journal.pone.0040114.Peer-Reviewed Original ResearchConceptsReproductive tract infectionsTract infectionsSTI/reproductive tract infectionsCondom useRisk behaviorsSexual partnersHigh-risk sexual behaviorCross-sectional studyConsistent condom useSexual behaviorG-spotPast yearInternet outreachAverage ageLast sexSubstantial riskRTI preventionWomenInfectionFemale partnersIntervention programsSex toysSexMenYearsThe HIV Epidemic: High-Income Countries
Vermund SH, Leigh-Brown AJ. The HIV Epidemic: High-Income Countries. Cold Spring Harbor Perspectives In Medicine 2012, 2: a007195. PMID: 22553497, PMCID: PMC3331688, DOI: 10.1101/cshperspect.a007195.Peer-Reviewed Original ResearchConceptsInjection drug useHIV epidemicDrug useNeedle/syringe sharingReceptive anal intercourseDifferent risk groupsRecent explosive epidemicsAntiretroviral therapyChild transmissionSyringe sharingAffected subgroupRisk groupsAnal intercourseVaginal intercourseHIV vulnerabilityExplosive epidemicsDiagnostic screeningEpidemicIncome countriesIntercourseUnited StatesSpecific strainsHigh-income nationsHIVTherapy
2011
Bisexual Behavior and Infection with HIV and Syphilis Among Men Who Have Sex with Men Along the East Coast of China
Liao M, Kang D, Jiang B, Tao X, Qian Y, Wang T, Bi Z, Xiao Y, Li C, Wu P, Vermund SH, Jia Y. Bisexual Behavior and Infection with HIV and Syphilis Among Men Who Have Sex with Men Along the East Coast of China. AIDS Patient Care And STDs 2011, 25: 683-691. PMID: 21923416, PMCID: PMC4186825, DOI: 10.1089/apc.2010.0371.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultBisexualityChildChinaCondomsCross-Sectional StudiesHealth Knowledge, Attitudes, PracticeHIV InfectionsHomosexuality, MaleHumansInterviews as TopicLogistic ModelsMaleMiddle AgedPrevalenceRisk-TakingSexual PartnersSocioeconomic FactorsSubstance-Related DisordersSyphilisUnsafe SexYoung AdultConceptsBisexual behaviorDrug usersMale partnersHIV/syphilisMultiple sexual partnersLast anal sexCross-sectional surveyDrug use behaviorsHIV/Multivariable modelHigh prevalenceSyphilis statusBlood samplesPrevention servicesHIVAnal sexMSMWSociodemographic informationUnprotected sexSyphilisSexual partnersMSMSexMenPopulation transmission
2009
High-risk behaviours among juvenile prison inmates in Pakistan
Altaf A, Janjua NZ, Kristensen S, Zaidi NA, Memon A, Hook EW, Vermund SH, Shah SA. High-risk behaviours among juvenile prison inmates in Pakistan. Public Health 2009, 123: 470-475. PMID: 19615706, DOI: 10.1016/j.puhe.2009.06.001.Peer-Reviewed Original ResearchConceptsHuman immunodeficiency virusCross-sectional studyHigh-risk behaviorsRisk behaviorsMultivariate logistic regression analysisHIV risk behaviorsLogistic regression analysisMean knowledge scoreMultiple sexual partnersUse of condomsMode of transmissionMale juvenile detaineesImmunodeficiency virusHigh riskRisk scoreChlamydia trachomatisUrine specimensLigase chain reactionCondom useKnowledge scoreNeisseria gonorrhoeaePrison inmatesSexual partnersBiological markersSexual activity[Sharing of needles and paraphernalia injection in new and long-term injection drug users in Sichuan, China].
Liu JB, Zhang LL, Lai WH, Feng L, Zeng YL, Liu L, Hu Y, Li J, Zhang XL, Xiao Y, Vermund SH, Jia YJ. [Sharing of needles and paraphernalia injection in new and long-term injection drug users in Sichuan, China]. Chinese Journal Of Epidemiology 2009, 30: 656-62. PMID: 19957584.Peer-Reviewed Original ResearchConceptsNon-regular sex partnersLong-term injection drug usersInjection drug usersRegular sex partnersCommercial sex partnersSex partnersUnprotected sexNew injection drug usersSex-related risk behaviorsHIV/STD preventionConsecutive cross-sectional surveysLess educationNeedle exchange programsCross-sectional surveyCondom promotionEligible participantsSTD preventionDrug usersNeedle exchangeRisk behaviorsParaphernalia sharingHigh frequencyInjection historyComprehensive intervention packageIntervention packagePredictors for casual sex and/or infection among sexually transmitted disease clinic attendees in China
Lu F, Jia Y, Bin S, Li C, Limei S, Kristensen S, Sun X, Xiao Y, Liu J, Li D, Qu S, Vermund SH. Predictors for casual sex and/or infection among sexually transmitted disease clinic attendees in China. International Journal Of STD & AIDS 2009, 20: 241-248. PMID: 19304968, PMCID: PMC2747355, DOI: 10.1258/ijsa.2008.008290.Peer-Reviewed Original ResearchConceptsDisease clinic attendeesClinic attendeesRisk factorsSTD diagnosisClinic-based cross-sectional studySimplex virus type 2Independent risk factorSexual behavior informationReproductive health concernsNon-gonococcal urethritisHealth care workersCross-sectional studyExpansion of HIVVirus type 2China's public healthPublic healthLower STD ratesCasual sexGenital wartsSTD clinicCommon diagnosisSTD prevalenceSTD controlSTD ratesType 2Prevalence of HIV infection and predictors for syphilis infection among female sex workers in southern China.
Lu F, Jia Y, Sun X, Wang L, Liu W, Xiao Y, Zeng G, Li C, Liu J, Cassell H, Chen HT, Vermund SH. Prevalence of HIV infection and predictors for syphilis infection among female sex workers in southern China. The Southeast Asian Journal Of Tropical Medicine And Public Health 2009, 40: 263-72. PMID: 19323011, PMCID: PMC2745968.Peer-Reviewed Original ResearchConceptsFemale sex workersInconsistent condom useSyphilis infectionHIV infectionCondom usePast monthSex workersCross-sectional studyRegular sex partnersVenue-based methodsHalf of participantsEligible participantsRisk factorsSTD symptomsPrevalence ratesDrug usersSex partnersInfectionLess educationPrevalenceMinority ethnic groupsMonthsLiuzhou CityEthnic groupsNon-local residents
2008
Predictors of unprotected sex among men who have sex with men in Beijing, China.
Li X, Shi W, Li D, Ruan Y, Jia Y, Vermund SH, Zhang X, Wang C, Liu Y, Yu M, Xing H, Hong K, Shao Y. Predictors of unprotected sex among men who have sex with men in Beijing, China. The Southeast Asian Journal Of Tropical Medicine And Public Health 2008, 39: 99-108. PMID: 18567448, PMCID: PMC2730761.Peer-Reviewed Original ResearchConceptsUnprotected anal intercourseMale sex partnersSex partnersAnal intercourseMore male sex partnersMale partnersPrevalence of HIVReceptive anal intercourseCasual male partnersRegular male partnersCommunity-based surveyLow monthly incomeCasual sex partnersMale sex workersSyphilis infectionCondom promotionHIV epidemicUnprotected sexHIVSex workersPeer referralMenSexMonthly incomeInfection