Alexei Zelenev, PhD
Associate Research Scientist in Medicine (AIDS)Cards
About
Research
Publications
2024
The impact of emergency guidance to the COVID‐19 pandemic on treatment entry, retention and mortality among patients on methadone in Ukraine
Ivasiy R, Madden L, Meteliuk A, Machavariani E, Ahmad B, Zelenev A, Desai M, Bromberg D, Polonsky M, de Leon S, Farnum S, Islam Z, Altice F. The impact of emergency guidance to the COVID‐19 pandemic on treatment entry, retention and mortality among patients on methadone in Ukraine. Addiction 2024, 119: 1585-1596. PMID: 38807448, DOI: 10.1111/add.16565.Peer-Reviewed Original ResearchOpioid agonist therapyTake-home dosesCOVID-19 guidancePre-COVID cohortAgonist therapyOptimal doseTreatment retentionEmergency guidanceEffective HIV prevention strategiesAdult HIV prevalenceHIV prevention strategiesMinistry of HealthImprove treatment retentionMethadone dosePatient survivalTime-dependent predictorsProspective cohortHIV prevalencePredictors of treatment retentionGovernmental clinicsPrimary outcomeHazard ratioPatient enrollmentPatientsMethadone patients
2023
Social networks, secondary syringe exchange, and opioid agonist therapy retention among people who inject drugs in Hartford, CT
Zelenev A, Michael L, Li J, Altice F. Social networks, secondary syringe exchange, and opioid agonist therapy retention among people who inject drugs in Hartford, CT. International Journal Of Drug Policy 2023, 123: 104250. PMID: 38088004, DOI: 10.1016/j.drugpo.2023.104250.Peer-Reviewed Original Research
2020
Modeling Combination Hepatitis C Virus Treatment and Prevention Strategies in a Network of People Who Inject Drugs in the United States
Zelenev A, Li J, Shea P, Hecht R, Altice FL. Modeling Combination Hepatitis C Virus Treatment and Prevention Strategies in a Network of People Who Inject Drugs in the United States. Clinical Infectious Diseases 2020, 72: 755-763. PMID: 32060534, PMCID: PMC7935393, DOI: 10.1093/cid/ciaa142.Peer-Reviewed Original ResearchConceptsOpioid agonist therapySyringe services programHepatitis C virus (HCV) treatmentC virus treatmentHCV prevalenceHCV microeliminationHCV TasPHCV treatmentPrevention strategiesVirus treatmentTasP strategyHigh HCV prevalenceMicroelimination of HCVHuman immunodeficiency virusHCV treatment coverageOAT coverageAgonist therapyImmunodeficiency virusTreatment coverageMicroeliminationPrevention impactPrevalenceComplimentary interventionsHCVPWID
2019
Effect of expanding opioid agonist therapies on the HIV epidemic and mortality in Ukraine: a modelling study
Tan J, Altice FL, Madden LM, Zelenev A. Effect of expanding opioid agonist therapies on the HIV epidemic and mortality in Ukraine: a modelling study. The Lancet HIV 2019, 7: e121-e128. PMID: 31879250, PMCID: PMC7289179, DOI: 10.1016/s2352-3018(19)30373-x.Peer-Reviewed Original ResearchConceptsOpioid agonist therapyNew HIV infectionsHigh HIV burdenHIV infectionMinistry of HealthOAT coverageAgonist therapyHIV burdenHIV incidenceBuprenorphine maintenance therapyPublic Health CenterMaintenance therapyHIV outcomesHIV prevalenceHIV transmissionMedication procurementHIV epidemicHealth centersHIV preventionTreatment goalsPWIDOAT expansionDisease controlSexual riskInfection
2018
Estimating HIV and HCV prevalence among people who inject drugs in 5 Ukrainian cities using stratification-based respondent driven and random sampling
Zelenev A, Shea P, Mazhnaya A, Meteliuk A, Pykalo I, Marcus R, Fomenko T, Prokhorova T, Altice FL. Estimating HIV and HCV prevalence among people who inject drugs in 5 Ukrainian cities using stratification-based respondent driven and random sampling. International Journal Of Drug Policy 2018, 67: 91-101. PMID: 30503695, PMCID: PMC6537868, DOI: 10.1016/j.drugpo.2018.09.010.Peer-Reviewed Original ResearchConceptsHCV prevalenceHIV prevalenceHCV prevalence estimatesHigh HCV prevalencePrevalence of HIVCross-sectional studyLow-resource settingsInverse probability weightsHCV antibodiesHCV infectionTreatment strategiesHIVTreatment prioritiesPrevalence estimatesHealth outcomesBetter preventionPrevalenceLocal epidemicsHCVPWIDOverall sampleSelection biasPreventionProbability weightsRegular basisOpioid Agonist Treatment and Improved Outcomes at Each Stage of the HIV Treatment Cascade in People Who Inject Drugs in Ukraine
Mazhnaya A, Marcus R, Bojko MJ, Zelenev A, Makarenko I, Pykalo I, Filippovych S, Dvoriak S, Altice FL. Opioid Agonist Treatment and Improved Outcomes at Each Stage of the HIV Treatment Cascade in People Who Inject Drugs in Ukraine. JAIDS Journal Of Acquired Immune Deficiency Syndromes 2018, 79: 288-295. PMID: 30312275, PMCID: PMC8215524, DOI: 10.1097/qai.0000000000001827.Peer-Reviewed Original ResearchConceptsOpioid agonist treatmentHIV treatment cascadeTreatment cascadeAgonist treatmentIndependent factorsHepatitis C virus testingOpioid-dependent PWIDOpioid use disorderClinical care settingsLogistic regression modelsOAT coverageAntiretroviral therapyHIV careUNAIDS 90HIV preventionImproved outcomesTreatment strategiesCare settingsVirus testingNationwide studyPWIDUse disordersOAT expansionHIVCareAccess to opioid agonist therapy in Russia: time for reform
Zelenev A. Access to opioid agonist therapy in Russia: time for reform. The Lancet HIV 2018, 5: e542-e543. PMID: 30033375, PMCID: PMC7122734, DOI: 10.1016/s2352-3018(18)30170-x.Peer-Reviewed Original ResearchAssessment of barrier severity and willingness to enter opioid agonist treatment among people who inject drugs in Ukraine
Zelenev A, Shea P, Mazhnaya A, Rozanova J, Madden L, Marcus R, Altice FL. Assessment of barrier severity and willingness to enter opioid agonist treatment among people who inject drugs in Ukraine. Drug And Alcohol Dependence 2018, 190: 82-88. PMID: 29990648, PMCID: PMC6292439, DOI: 10.1016/j.drugalcdep.2018.05.027.Peer-Reviewed Original ResearchConceptsOpioid agonist therapyOpioid agonist treatmentOpioid-dependent peopleSubstance abuse treatment programsCross-sectional surveyAgonist therapyAgonist treatmentHIV preventionTreatment perceptionsTreatment efficacyOAT expansionStudy participantsTreatment programAddiction treatmentComposite measureSeveritySocial stigmaDrugsTreatmentStructural barriersBarrier severityParticipantsHepatitis C virus status awareness and test results confirmation among people who inject drugs in Ukraine
Iakunchykova O, Meteliuk A, Zelenev A, Mazhnaya A, Tracy M, Altice FL. Hepatitis C virus status awareness and test results confirmation among people who inject drugs in Ukraine. International Journal Of Drug Policy 2018, 57: 11-17. PMID: 29655101, PMCID: PMC5994183, DOI: 10.1016/j.drugpo.2018.03.022.Peer-Reviewed Original ResearchConceptsAnti-HCV testIndependent correlatesHCV testingPositive statusAnti-HCV positive statusAnti-HCV positivityHCV treatment cascadeHCV-positive statusOpioid-dependent PWIDRegular HCV testingHIV-negative participantsPositive test resultsChronic HCVHCV prevalenceStatus awarenessHCV infectionHCV preventionTreatment cascadeTreatment strategiesTreatment utilizationNegative participantsPWIDTreatment experienceHCVConfirmatory testing
2017
Hepatitis C virus treatment as prevention in an extended network of people who inject drugs in the USA: a modelling study
Zelenev A, Li J, Mazhnaya A, Basu S, Altice FL. Hepatitis C virus treatment as prevention in an extended network of people who inject drugs in the USA: a modelling study. The Lancet Infectious Diseases 2017, 18: 215-224. PMID: 29153265, PMCID: PMC5860640, DOI: 10.1016/s1473-3099(17)30676-x.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAntiviral AgentsChemopreventionCitiesComputer SimulationDisease Transmission, InfectiousFemaleHepatitis CHumansMaleMiddle AgedModels, StatisticalPrevalenceSubstance Abuse, IntravenousSurveys and QuestionnairesTime FactorsTreatment OutcomeUnited StatesYoung AdultConceptsBaseline HCV prevalenceHepatitis C virusHCV prevalenceInjection partnersPrevention strategiesTreatment coverageTransmission of HCVHepatitis C virus (HCV) treatmentHCV elimination strategySuccessful HCV treatmentC virus treatmentInjection drug usersHCV treatment coverageAdditional network memberHCV treatmentActing antiviralsC virusChronic infectionVirus treatmentDrug usersPrevalenceDrug abuseDrugsNational InstitutePrevention
News
News
- January 01, 2020
Yale study urges life-saving drug treatment to combat Ukraine’s HIV epidemic
- November 28, 2017
Hepatitis C ‘treatment as prevention’ strategy examined in new study
- January 20, 2014
HIV-infected women experience worse treatment outcomes after release from jail
- June 04, 2013
An urban challenge: diagnosing and treating latent tuberculosis infection