2025
Household transmission of SARS-CoV-2 in five US jurisdictions: Comparison of Delta and Omicron variants
Baker J, Nakayama J, O’Hegarty M, McGowan A, Teran R, Bart S, Sosa L, Brockmeyer J, English K, Mosack K, Bhattacharyya S, Khubbar M, Yerkes N, Campos B, Paegle A, McGee J, Herrera R, Pearlowitz M, Williams T, Kirking H, Tate J. Household transmission of SARS-CoV-2 in five US jurisdictions: Comparison of Delta and Omicron variants. PLOS ONE 2025, 20: e0313680. PMID: 39787187, PMCID: PMC11717262, DOI: 10.1371/journal.pone.0313680.Peer-Reviewed Original ResearchConceptsPublic health jurisdictionsTransmission riskGeneralized estimating equationsHealth jurisdictionsSARS-CoV-2 transmissionSARS-CoV-2Household contactsIndex casePrevention strategiesRisk estimatesImpact SARS-CoV-2 transmissionConfidence intervalsSymptom statusMultivariate modelUS jurisdictionsSARS-CoV-2 DeltaEstimate differencesHousehold transmission rateOmicron variantSocial factorsSource of SARS-CoV-2 transmissionCOVID-19 vaccine dosesSARS-CoV-2 variantsRiskSymptomatic index cases
2024
An adapted scale to measure perceived TB and HIV stigma during household contact investigation.
Armstrong-Hough M, Shelby T, Ggita J, Nangendo J, Gupta A, Davis J, Katamba A. An adapted scale to measure perceived TB and HIV stigma during household contact investigation. The International Journal Of Tuberculosis And Lung Disease 2024, 28: 433-438. PMID: 39187997, DOI: 10.5588/ijtld.23.0395.Peer-Reviewed Original ResearchConceptsHousehold contact investigationStigma ScaleTB-HIVNewly diagnosed TB patientsContact investigationCognitive interview dataHIV stigmaHealth behaviorsFactor analysisCognitive interviewsElimination of itemsInter-item covariationStandardised measuresPsychometric propertiesRandom sampleTB patientsInterview dataHIVIdentifying opportunitiesStigmaHousehold contactsItemsScoresHouseholdsCovariatesInsights into SARS-CoV-2 Surveillance among Prison Populations in Mato Grosso do Sul, Brazil, in 2022
da Silva L, Alcantara L, Fonseca V, Frias D, Zardin M, de Castro Lichs G, Esposito A, Xavier J, Fritsch H, Lima M, de Oliveira C, de Arruda L, de Mello Almeida Maziero L, Barretos E, Oshiro P, Menezes E, de Freitas Cardoso L, Lemos E, Lourenço J, de Albuquerque C, do Carmo Said R, Rosewell A, Demarchi L, Croda J, Giovanetti M, Gonçalves C. Insights into SARS-CoV-2 Surveillance among Prison Populations in Mato Grosso do Sul, Brazil, in 2022. Viruses 2024, 16: 1143. PMID: 39066305, PMCID: PMC11281713, DOI: 10.3390/v16071143.Peer-Reviewed Original ResearchConceptsNext-generation sequencingPrison populationIncarcerated populationsOvercrowded cellsGenome sequenceGenomic characteristicsPrisonGenomic surveillanceEnclosed populationMato GrossoAverage coverageIsolation protocolSARS-CoV-2RT-qPCR testSARS-CoV-2 surveillanceRT-qPCRSequenceFrequent transferEpidemiological monitoringLimited healthcare accessGenomeCellsOmicron variant
2023
Expedited Partner Therapy: A Multicomponent Initiative to Boost Provider Counseling
Markowitz M, Ackerman-Banks C, Oliveira C, Fashina O, Pathy S, Sheth S. Expedited Partner Therapy: A Multicomponent Initiative to Boost Provider Counseling. Sexually Transmitted Diseases 2023, 51: 15-21. PMID: 37921862, PMCID: PMC11413968, DOI: 10.1097/olq.0000000000001894.Peer-Reviewed Original ResearchMeSH KeywordsChlamydia InfectionsChlamydia trachomatisContact TracingCounselingGonorrheaHumansSexual PartnersUnited StatesConceptsPartner therapyProvider counselingMulticomponent initiativesQuasi-experimental interrupted time-series studyExpedited Partner TherapyInterrupted time series studyRecords of patientsFrequent reinfectionsInterrupted time series modelObstetric indicationsGynecology clinicTherapy prescriptionPatients' perceptionsPatient acceptanceChlamydia trachomatisPatient encountersNeisseria gonorrhoeaeTherapyRegistered NursesTime-series studyPublic insurancePatientsAcademic obstetricsCounselingSignificant increaseSpatially-targeted tuberculosis screening has limited impact beyond household contact tracing in Lima, Peru: A model-based analysis
Havumaki J, Warren J, Zelner J, Menzies N, Calderon R, Contreras C, Lecca L, Becerra M, Murray M, Cohen T. Spatially-targeted tuberculosis screening has limited impact beyond household contact tracing in Lima, Peru: A model-based analysis. PLOS ONE 2023, 18: e0293519. PMID: 37903091, PMCID: PMC10615320, DOI: 10.1371/journal.pone.0293519.Peer-Reviewed Original ResearchA user-centred implementation strategy for tuberculosis contact investigation in Uganda: protocol for a stepped-wedge, cluster-randomised trial
Katamba A, Gupta A, Turimumahoro P, Ochom E, Ggita J, Nakasendwa S, Nanziri L, Musinguzi J, Hennein R, Sekadde M, Hanrahan C, Byaruhanga R, Yoeli E, Turyahabwe S, Cattamanchi A, Dowdy D, Haberer J, Armstrong-Hough M, Kiwanuka N, Davis J. A user-centred implementation strategy for tuberculosis contact investigation in Uganda: protocol for a stepped-wedge, cluster-randomised trial. BMC Public Health 2023, 23: 1568. PMID: 37592314, PMCID: PMC10436440, DOI: 10.1186/s12889-023-16510-0.Peer-Reviewed Original ResearchMeSH KeywordsAlgorithmsCognitionContact TracingHumansRandomized Controlled Trials as TopicTuberculosisUgandaConceptsContact investigationClinical effectiveness outcomesPrimary implementation outcomeTB contact investigationTB preventative therapyTB treatment initiationTimely TB diagnosisTrial registrationThe trialTuberculosis contact investigationCluster-randomised trialHigh-burden settingsImplementation-effectiveness trialEvidence-based interventionsUganda National CouncilWorld Health OrganizationProportion of contactsTB evaluationPeer-reviewed journalsMiddle-income countriesTreatment initiationTB diagnosisPreventative therapyUndiagnosed personsInfectious deathSputum samplesExploring stakeholders perspectives on TB contact investigation in Cali, Colombia: a qualitative study
Velosa J, Gómez J, Zúñiga C, Díaz G, Ferro B, Davis J, Grau L. Exploring stakeholders perspectives on TB contact investigation in Cali, Colombia: a qualitative study. Frontiers In Public Health 2023, 11: 1204862. PMID: 37564424, PMCID: PMC10411903, DOI: 10.3389/fpubh.2023.1204862.Peer-Reviewed Original ResearchMeSH KeywordsAmbulatory Care FacilitiesColombiaContact TracingHumansQualitative ResearchTuberculosisConceptsTB contact investigationContact investigationPublic health staffHealth workersHousehold contactsTB knowledgeTB casesTest uptakeHealth staffHousehold visitsHealth OrganizationTuberculosis case findingNational public health authoritiesPublic health authoritiesWorld Health OrganizationPublic health organizationsMiddle-income countriesTB controlCase findingThematic analysisHealth authoritiesDiagnostic testsInductive thematic analysisSemi-structured interviewsMain barriersIsolation and Quarantine for Coronavirus Disease 2019 in the United States, 2020–2022
Oeltmann J, Vohra D, Matulewicz H, DeLuca N, Smith J, Couzens C, Lash R, Harvey B, Boyette M, Edwards A, Talboy P, Dubose O, Regan P, Loosier P, Caruso E, Katz D, Taylor M, Moonan P. Isolation and Quarantine for Coronavirus Disease 2019 in the United States, 2020–2022. Clinical Infectious Diseases 2023, 77: 212-219. PMID: 36947142, PMCID: PMC11094624, DOI: 10.1093/cid/ciad163.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedContact TracingCOVID-19FemaleHumansMaleMiddle AgedPatient IsolationQuarantineUnited StatesYoung AdultConceptsCoronavirus disease 2019Case patientsDisease 2019Positive severe acute respiratory syndrome coronavirus 2 test resultAdult case patientsCase investigationCOVID-19Public health programsPublic health workforceHealth programsHealth workforceContact tracingPatientsHealth officialsMost adultsAdultsDaysImpact of contactRepresentative sampleTotalMore adultsPanel SurveyQuarantine
2022
“I can’t do it”: A qualitative study exploring case and contact experiences with COVID-19 contact tracing
Shelby T, Arechiga C, Gupta AJ, Hennein R, Schenck C, Weeks B, Bond M, Niccolai L, Davis JL, Grau LE. “I can’t do it”: A qualitative study exploring case and contact experiences with COVID-19 contact tracing. BMC Public Health 2022, 22: 1963. PMID: 36284292, PMCID: PMC9595089, DOI: 10.1186/s12889-022-14265-8.Peer-Reviewed Original ResearchConceptsContact experiencesBehaviour Change Wheel frameworkEmotional needsShape behaviorSocial contactPhysical symptomsSocial factorsLow trustPotential interventionsMotivationEngagementConvenience sampleCandidate interventionsBehavior modelQualitative studyExperienceEmotionsTrustWheel frameworkInterventionSymptomsCentering Health Equity Within COVID-19 Contact Tracing: Connecticut's Community Outreach Specialist Program
Johnson K, Diallo K, Hennein R, Shelby T, Zhou X, Gupta AJ, Ludomirsky A, Weiss JM, Nunez-Smith M, Soto K, Davis JL. Centering Health Equity Within COVID-19 Contact Tracing: Connecticut's Community Outreach Specialist Program. Journal Of Public Health Management And Practice 2022, 28: 728-738. PMID: 36194817, PMCID: PMC9560910, DOI: 10.1097/phh.0000000000001608.Peer-Reviewed Original ResearchMeSH KeywordsCommunity-Institutional RelationsConnecticutContact TracingCOVID-19Cross-Sectional StudiesHealth EquityHumansPandemicsConceptsNon-English speaking populationsRelevant language skillsLanguage skillsCultural barriersCompetent careField notesContact tracingLanguageCommunication effortsTarget communityCOVID-19-related stigmaMaterial supportSpecialist programLocal health departmentsQualitative analysisLow socioeconomic statusCross-sectional analysisCommunity-engaged strategiesProportion of residentsSpeakingCOVID-19 contactHealth departmentsCommunityHealth equityCOVID-19 educationEffect of patient-delivered household contact tracing and prevention for tuberculosis: A household cluster-randomised trial in Malawi
Kaswaswa K, MacPherson P, Kumwenda M, Mpunga J, Thindwa D, Nliwasa M, Mwapasa M, Odland J, Tomoka T, Chipungu G, Mukaka M, Corbett E. Effect of patient-delivered household contact tracing and prevention for tuberculosis: A household cluster-randomised trial in Malawi. PLOS ONE 2022, 17: e0269219. PMID: 36074775, PMCID: PMC9455850, DOI: 10.1371/journal.pone.0269219.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultChildChild, PreschoolContact TracingFamily CharacteristicsHumansIsoniazidMalawiTuberculosisConceptsTB preventive therapyStandard of careHousehold contactsNational guidelinesTB participantsEligible TB patientsMonths of randomisationCluster-randomised trialTRIAL REGISTRATION NUMBERHousehold contact tracingAge 5 yearsLow-resource settingsTB diseaseTB patientsPreventive therapySecondary outcomesTB screeningPrimary outcomeSymptom screeningIntervention armTB diagnosisSymptom screenMAIN OUTCOMEHigh riskTriage toolAssessing the quality of tuberculosis care using routine surveillance data: a process evaluation employing the Zero TB Indicator Framework in Mongolia
Saranjav A, Parisi C, Zhou X, Dorjnamjil K, Samdan T, Erdenebaatar S, Chuluun A, Dalkh T, Ganbaatar G, Brooks MB, Spiegelman D, Ganmaa D, Davis JL. Assessing the quality of tuberculosis care using routine surveillance data: a process evaluation employing the Zero TB Indicator Framework in Mongolia. BMJ Open 2022, 12: e061229. PMID: 35973702, PMCID: PMC9386240, DOI: 10.1136/bmjopen-2022-061229.Peer-Reviewed Original ResearchMeSH KeywordsContact TracingCross-Sectional StudiesHumansMaleMongoliaRetrospective StudiesTuberculosisTuberculosis, PulmonaryConceptsPrimary health centersTB preventive therapyRoutine surveillance dataHealth centersHousehold contactsCohort studyPreventive therapyTB careTB dispensariesRetrospective cross-sectional cohort studyCross-sectional cohort studySurveillance dataActive TB treatmentGuideline-adherent careHealth system predictorsQuality of tuberculosisOdds of patientsHealth system factorsQuality improvement interventionsLow-quality careCare cascadeTB screeningTB treatmentTuberculosis careIndex patientsInterventions to Increase HIV Testing Uptake in Global Settings
Sundararajan R, Ponticiello M, Nansera D, Jeremiah K, Muyindike W. Interventions to Increase HIV Testing Uptake in Global Settings. Current HIV/AIDS Reports 2022, 19: 184-193. PMID: 35441985, PMCID: PMC9110462, DOI: 10.1007/s11904-022-00602-4.Peer-Reviewed Original ResearchConceptsHIV testing interventionsHIV testing uptakeTesting uptakeTest interventionsIncrease HIV testing uptakeImprove HIV testing uptakeImprove HIV testingCommunity-based interventionsTrusted community leadersLow-resource settingsCommunity-based approachHIV testingPriority populationsBiomedical carePartner notificationDiagnosed PLWHMobile outreachIncreased testingSub-Saharan AfricaCommunity leadersPLWHInterventionSub-SaharanSelf-testingHIVA cost analysis of implementing mobile health facilitated tuberculosis contact investigation in a low-income setting
Turimumahoro P, Tucker A, Gupta AJ, Tampi RP, Babirye D, Ochom E, Ggita JM, Ayakaka I, Sohn H, Katamba A, Dowdy D, Davis JL. A cost analysis of implementing mobile health facilitated tuberculosis contact investigation in a low-income setting. PLOS ONE 2022, 17: e0265033. PMID: 35363783, PMCID: PMC8975098, DOI: 10.1371/journal.pone.0265033.Peer-Reviewed Original ResearchConceptsCommunity health workersTuberculosis contact investigationHousehold contactsContact investigationHome-based HIV testingContact investigation strategyHIV testing servicesPatient-provider communicationHome-based strategiesResource-limited settingsLow-income settingsUgandan health systemTB evaluationActive TBHIV testingSputum collectionSputum samplesHealth workersProgram implementationHealth servicesMHealth strategiesHealth systemProgram reachMobile health applicationsRoutine implementationTheory-Informed Design of a Tailored Strategy for Implementing Household TB Contact Investigation in Uganda
Davis JL, Ayakaka I, Ggita JM, Ochom E, Babirye D, Turimumahoro P, Gupta AJ, Mugabe FR, Armstrong-Hough M, Cattamanchi A, Katamba A. Theory-Informed Design of a Tailored Strategy for Implementing Household TB Contact Investigation in Uganda. Frontiers In Public Health 2022, 10: 837211. PMID: 35400072, PMCID: PMC8987305, DOI: 10.3389/fpubh.2022.837211.Peer-Reviewed Original ResearchConceptsContact investigationBehaviour Change Wheel frameworkMulti-component implementation strategyHousehold contact investigationTB contact investigationCommon infectious causeMultiple behavior change techniquesCluster-randomized trialEvidence-based interventionsWheel frameworkWorld Health OrganizationBehaviour change techniquesUsual careActive tuberculosisInfectious causesMiddle-income countriesHistorical controlsImplementation strategiesParallel mixed-methods studyMicro-randomized trialCOM-B modelBCW frameworkHealth OrganizationTuberculosisMixed-methods studySARS-CoV-2 B.1.1.529 (Omicron) Variant Transmission Within Households — Four U.S. Jurisdictions, November 2021–February 2022
Baker J, Nakayama J, O’Hegarty M, McGowan A, Teran R, Bart S, Mosack K, Roberts N, Campos B, Paegle A, McGee J, Herrera R, English K, Barrios C, Davis A, Roloff C, Sosa L, Brockmeyer J, Page L, Bauer A, Weiner J, Khubbar M, Bhattacharyya S, Kirking H, Tate J. SARS-CoV-2 B.1.1.529 (Omicron) Variant Transmission Within Households — Four U.S. Jurisdictions, November 2021–February 2022. MMWR Morbidity And Mortality Weekly Report 2022, 71: 341-346. PMID: 35238860, PMCID: PMC8893332, DOI: 10.15585/mmwr.mm7109e1.Peer-Reviewed Original ResearchConceptsHousehold contactsIndex patientCOVID-19 primary seriesSARS-CoV-2Prevention strategiesCOVID-19 booster doseEffectiveness of prevention strategiesBooster dosePrimary seriesOmicron infectionPatientsOmicron transmissionHousehold transmissionVariant transmissionInfected personsHousehold settingsCOVID-19Cases of COVID-19InfectionOmicronGenomic epidemiology of SARS-CoV-2 in a UK university identifies dynamics of transmission
Aggarwal D, Warne B, Jahun A, Hamilton W, Fieldman T, du Plessis L, Hill V, Blane B, Watkins E, Wright E, Hall G, Ludden C, Myers R, Hosmillo M, Chaudhry Y, Pinckert M, Georgana I, Izuagbe R, Leek D, Nsonwu O, Hughes G, Packer S, Page A, Metaxaki M, Fuller S, Weale G, Holgate J, Brown C, Howes R, McFarlane D, Dougan G, Pybus O, Angelis D, Maxwell P, Peacock S, Weekes M, Illingworth C, Harrison E, Matheson N, Goodfellow I. Genomic epidemiology of SARS-CoV-2 in a UK university identifies dynamics of transmission. Nature Communications 2022, 13: 751. PMID: 35136068, PMCID: PMC8826310, DOI: 10.1038/s41467-021-27942-w.Peer-Reviewed Original ResearchMeSH KeywordsContact TracingCOVID-19Genome, ViralGenomicsHumansPhylogenyRisk FactorsRNA, ViralSARS-CoV-2StudentsUnited KingdomUniversitiesConceptsDeterminants of SARS-CoV-2 transmissionPublic health policiesHigher education settingsLocal infection control measuresAt-risk populationsSARS-CoV-2 transmissionHealth policyEffective interventionsEducational settingsGenomic epidemiology of SARS-CoV-2SARS-CoV-2 isolatesAt-riskGenetic clustersPhylogenetic comparisonsEpidemiology of SARS-CoV-2Infection control measuresGenomic epidemiologyNational lockdownSARS-CoV-2Social gatheringsUK universitiesStudent casesStudent accommodationSurrounding communityUniversity
2021
Transmission from vaccinated individuals in a large SARS-CoV-2 Delta variant outbreak
Siddle K, Krasilnikova L, Moreno G, Schaffner S, Vostok J, Fitzgerald N, Lemieux J, Barkas N, Loreth C, Specht I, Tomkins-Tinch C, Paull J, Schaeffer B, Taylor B, Loftness B, Johnson H, Schubert P, Shephard H, Doucette M, Fink T, Lang A, Baez S, Beauchamp J, Hennigan S, Buzby E, Ash S, Brown J, Clancy S, Cofsky S, Gagne L, Hall J, Harrington R, Gionet G, DeRuff K, Vodzak M, Adams G, Dobbins S, Slack S, Reilly S, Anderson L, Cipicchio M, DeFelice M, Grimsby J, Anderson S, Blumenstiel B, Meldrim J, Rooke H, Vicente G, Smith N, Messer K, Reagan F, Mandese Z, Lee M, Ray M, Fisher M, Ulcena M, Nolet C, English S, Larkin K, Vernest K, Chaluvadi S, Arvidson D, Melchiono M, Covell T, Harik V, Brock-Fisher T, Dunn M, Kearns A, Hanage W, Bernard C, Philippakis A, Lennon N, Gabriel S, Gallagher G, Smole S, Madoff L, Brown C, Park D, MacInnis B, Sabeti P. Transmission from vaccinated individuals in a large SARS-CoV-2 Delta variant outbreak. Cell 2021, 185: 485-492.e10. PMID: 35051367, PMCID: PMC8695126, DOI: 10.1016/j.cell.2021.12.027.Peer-Reviewed Original ResearchConceptsVaccinated individualsPublic health responseEpidemiological dataHealth responseComprehensive public health responseFirst large outbreakHigh vaccination ratesDelta variant outbreakOutbreak-associated casesVaccination ratesCOVID-19 casesDelta variantRobust public health responseVariant outbreakLarge outbreakMultiple settingsOutbreakIndividualsCasesInfectionOnward impactResponseLessons Learned From COVID-19 Contact Tracing During a Public Health Emergency: A Prospective Implementation Study
Shelby T, Schenck C, Weeks B, Goodwin J, Hennein R, Zhou X, Spiegelman D, Grau LE, Niccolai L, Bond M, Davis JL. Lessons Learned From COVID-19 Contact Tracing During a Public Health Emergency: A Prospective Implementation Study. Frontiers In Public Health 2021, 9: 721952. PMID: 34490198, PMCID: PMC8417826, DOI: 10.3389/fpubh.2021.721952.Peer-Reviewed Original ResearchConceptsProspective implementation studyOutreach callsContact tracingAge-related disparitiesPublic health nursesRE-AIM implementation frameworkMultivariable regression modelsTimeliness of caseImplementation studyPublic health responsePublic health emergencyMedian timeHealth nursesAfrican American casesHealth responseInfectious diseasesFuture epidemicsDays of exposureHealth emergencyCOVID-19System-level predictorsRegression modelsCOVID-19 Contact TracingDaysPredictorsComparison of Estimated Effectiveness of Case-Based and Population-Based Interventions on COVID-19 Containment in Taiwan
Ng TC, Cheng HY, Chang HH, Liu CC, Yang CC, Jian SW, Liu DP, Cohen T, Lin HH. Comparison of Estimated Effectiveness of Case-Based and Population-Based Interventions on COVID-19 Containment in Taiwan. JAMA Internal Medicine 2021, 181: 913-921. PMID: 33821922, PMCID: PMC8025126, DOI: 10.1001/jamainternmed.2021.1644.Peer-Reviewed Original ResearchConceptsPopulation-based interventionsCOVID-19 casesCOVID-19 controlComparative effectiveness research studyComparative effectiveness studiesEffective public health systemCOVID-19Reproduction numberPublic health professionalsPublic health systemCategories of interventionsStochastic branching process modelCase detectionMAIN OUTCOMESubsequent infectionPresymptomatic stagePrimary casesHealth professionalsEffective reproduction numberEstimated EffectivenessSerial intervalEffectiveness studiesHealth systemContact tracingCOVID-19 containment
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