Featured Publications
Insights into Plasmodium vivax Asymptomatic Malaria Infections and Direct Skin-Feeding Assays to Assess Onward Malaria Transmission in the Amazon.
Moreno M, Torres K, Tong C, García Castillo SS, Carrasco-Escobar G, Guedez G, Torres L, Herrera-Varela M, Guerra L, Guzman-Guzman M, Wong D, Ramirez R, Llanos-Cuentas A, Conn JE, Gamboa D, Vinetz JM. Insights into Plasmodium vivax Asymptomatic Malaria Infections and Direct Skin-Feeding Assays to Assess Onward Malaria Transmission in the Amazon. American Journal Of Tropical Medicine And Hygiene 2022, 107: 154-161. PMID: 35895359, PMCID: PMC9294676, DOI: 10.4269/ajtmh.21-1217.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnophelesAsymptomatic InfectionsCohort StudiesHumansMalariaMalaria, VivaxMosquito VectorsPlasmodium vivaxConceptsDirect skin feeding assaysMalaria infectionP. vivax malaria infectionsAsymptomatic malaria infectionsVivax malaria infectionMosquito feeding assaysDiverse epidemiological settingsCohort studySymptomatic infectionAsymptomatic individualsAsymptomatic infectionSymptomatic participantsParasite carriersPlasmodium vivaxEpidemiological settingsMalaria transmissionPlasmodium gametocytesInfectionMajor mosquito vectorsDisease transmissibilityParasite infectionLongitudinal studyMosquito vectorsInfection intensityInfectivity
2024
Recurrence patterns and evolution of submicroscopic and asymptomatic Plasmodium vivax infections in malaria-endemic areas of the Peruvian Amazon
Castillo S, Alvarez C, Rosas-Aguirre Á, Acosta C, Corder R, Gómez J, Guzmán M, Speybroeck N, Llanos-Cuentas A, Castro M, Rosanas-Urgell A, Ferreira M, Vinetz J, Gamboa D, Torres K. Recurrence patterns and evolution of submicroscopic and asymptomatic Plasmodium vivax infections in malaria-endemic areas of the Peruvian Amazon. PLOS Neglected Tropical Diseases 2024, 18: e0012566. PMID: 39480785, PMCID: PMC11527163, DOI: 10.1371/journal.pntd.0012566.Peer-Reviewed Original ResearchConceptsRisk of P. vivax infectionPlasmodium vivax malaria transmissionFactors associated with recurrenceVivax malaria transmissionPlasmodium vivax infectionMalaria-endemic areasPopulation-based cohort studyFrequency of recurrenceApplication of molecular diagnostic methodsMalaria recurrenceMalaria infectionMalaria transmissionVivax infectionRecurrence rateMolecular diagnostic methodsRecurrence riskConsequences of prolonged exposureFollow-upCohort studyEndemic settingsRecurrenceAsymptomatic infectionAsymptomatic casesInfectionInitial infectionLower Microscopy Sensitivity with Decreasing Malaria Prevalence in the Urban Amazon Region, Brazil, 2018–2021 - Volume 30, Number 9—September 2024 - Emerging Infectious Diseases journal - CDC
Rodrigues P, Johansen I, Ladeia W, Esquivel F, Corder R, Tonini J, Calil P, Fernandes A, Fontoura P, Cavasini C, Vinetz J, Castro M, Ferreira M, . Lower Microscopy Sensitivity with Decreasing Malaria Prevalence in the Urban Amazon Region, Brazil, 2018–2021 - Volume 30, Number 9—September 2024 - Emerging Infectious Diseases journal - CDC. Emerging Infectious Diseases 2024, 30: 1884-1894. PMID: 39174028, PMCID: PMC11346994, DOI: 10.3201/eid3009.240378.Peer-Reviewed Original ResearchConceptsEffectiveness of malaria controlDecreasing malaria prevalenceEpidemiology of malariaPoint-of-care microscopyThreshold of microscopyPlasmodium vivaxMalaria prevalenceMalarial infectionMalaria controlMalaria transmissionP. falciparumMicroscopy sensitivityParasite densityAsymptomatic infectionRoutine surveillanceMalariaPrevalence surveyInfectionPrevalenceParasite genotypesTransmission hotspotsElimination strategiesRural residentsMolecular methodsCDCGenomic surveillance of malaria parasites in an indigenous community in the Peruvian Amazon
Cabrera-Sosa L, Nolasco O, Kattenberg J, Fernandez-Miñope C, Valdivia H, Barazorda K, Arévalo de los Rios S, Rodriguez-Ferrucci H, Vinetz J, Rosanas-Urgell A, Van geertruyden J, Gamboa D, Delgado-Ratto C. Genomic surveillance of malaria parasites in an indigenous community in the Peruvian Amazon. Scientific Reports 2024, 14: 16291. PMID: 39009685, PMCID: PMC11250820, DOI: 10.1038/s41598-024-66925-x.Peer-Reviewed Original ResearchConceptsPassive case detectionPf parasitesPersistent malaria transmissionPfhrp2/3 gene deletionsDeep sequencing assaySulfadoxine-pyrimethamineMalaria casesMalaria eliminationPlasmodium vivaxMalaria parasitesMalaria transmissionP. falciparumResistance mutationsImported infectionsMalariaPopulation genetic indicesSequencing assayCase detectionGene deletionPV populationResistance markersGenetic diversityPeruvian AmazonGenomic surveillanceGenetic indicesEffect of spatiotemporal variables on abundance, biting activity and parity of Nyssorhynchus darlingi (Diptera: Culicidae) in peri-Iquitos, Peru
Bickersmith S, Saavedra M, Prussing C, Lange R, Morales J, Alava F, Vinetz J, Gamboa D, Moreno M, Conn J. Effect of spatiotemporal variables on abundance, biting activity and parity of Nyssorhynchus darlingi (Diptera: Culicidae) in peri-Iquitos, Peru. Malaria Journal 2024, 23: 112. PMID: 38641572, PMCID: PMC11031940, DOI: 10.1186/s12936-024-04940-z.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnophelesBites and StingsFemaleHumansMalariaMalaria, FalciparumMalaria, VivaxMosquito VectorsPeruPlasmodiumSeasonsConceptsMalaria transmissionBreeding site availabilityPresence of Plasmodium vivaxDry seasonBiting behaviorRisk of malaria transmissionMalaria-endemic regionsHuman malaria casesPlasmodium falciparum sporozoitesRainy seasonCommunity typesNyssorhynchus darlingiRates of parityReal-time PCRAmazonian PeruP. vivaxMalaria casesPlasmodium vivaxHuman landing catchesP. falciparumEffect of seasonMosquito behaviorConclusionsThese dataDaily survivalDarlingiA prospective cohort study linking migration, climate, and malaria risk in the Peruvian Amazon – CORRIGENDUM
Gunderson A, Recalde-Coronel C, Zaitchik B, Yori P, Pinedo S, Olortegui M, Kosek M, Vinetz J, Pan W. A prospective cohort study linking migration, climate, and malaria risk in the Peruvian Amazon – CORRIGENDUM. Epidemiology And Infection 2024, 152: e5. PMID: 38214060, PMCID: PMC10789972, DOI: 10.1017/s0950268824000025.Peer-Reviewed Original Research
2023
A prospective cohort study linking migration, climate, and malaria risk in the Peruvian Amazon
Gunderson A, Recalde-Coronel C, Zaitchik B, Yori P, Pinedo S, Olortegui M, Kosek M, Vinetz J, Pan W. A prospective cohort study linking migration, climate, and malaria risk in the Peruvian Amazon. Epidemiology And Infection 2023, 151: e202. PMID: 38031496, PMCID: PMC10753477, DOI: 10.1017/s0950268823001838.Peer-Reviewed Original ResearchMeSH KeywordsHumansMalariaMalaria, FalciparumMalaria, VivaxPeruPlasmodium falciparumPlasmodium vivaxProspective StudiesOptimization of Plasmodium vivax infection of colonized Amazonian Anopheles darlingi
Andrade A, Santos N, Bastos A, Pontual J, Araújo C, Lima A, Martinez L, Ferreira A, Aguiar A, Teles C, Guido R, Santana R, Lopes S, Medeiros J, Rizopoulos Z, Vinetz J, Campo B, Lacerda M, Araújo M. Optimization of Plasmodium vivax infection of colonized Amazonian Anopheles darlingi. Scientific Reports 2023, 13: 18207. PMID: 37875508, PMCID: PMC10598059, DOI: 10.1038/s41598-023-44556-y.Peer-Reviewed Original ResearchConceptsP. vivax liver stagesPlasmodium vivax infectionPlasmodium vivax sporozoitesLiver stage parasitesP. vivax sporozoitesFemale anopheline mosquitoesVivax infectionLiver stagesHepatocyte infectionVaccine developmentStage parasitesSporozoite viabilityMembrane feeding systemSporozoite productionDrug developmentSporozoitesAnopheline mosquitoesInfectionParasite biologyArtificial membrane feeding systemPatientsSimple centrifugation methodSerum replacementBloodTransmission-blocking activity of antimalarials for Plasmodium vivax malaria in Anopheles darlingi
Andrade A, Santos N, Bastos A, Pontual J, Araújo J, Silva A, Martinez L, Lima A, Aguiar A, Teles C, Medeiros J, Pereira D, Vinetz J, Gazzinelli R, Araújo M. Transmission-blocking activity of antimalarials for Plasmodium vivax malaria in Anopheles darlingi. PLOS Neglected Tropical Diseases 2023, 17: e0011425. PMID: 37327209, PMCID: PMC10310017, DOI: 10.1371/journal.pntd.0011425.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnophelesAntimalarialsChloroquineHumansMalariaMalaria, VivaxPlasmodium vivaxPrimaquineConceptsDensity of gametocytesTransmission-blocking efficacyPlasmodium vivax malariaTransmission-blocking activityImportant infectious diseasesOne-doseVivax malariaP. vivaxMosquito infectionPlasmodium vivaxTreatment groupsPatient's bloodGametocyte productionMalaria transmissionInfectious diseasesGenus PlasmodiumMalariaTreatmentChloroquinePrimaquineVivaxBloodDirect membraneBiological characteristicsMosquitoes
2022
Epidemiological characteristics of P. vivax asymptomatic infections in the Peruvian Amazon
Villasis E, Castillo S, Guzman M, Torres J, Gomez J, Garro K, Cordova AM, Reategui C, Abanto C, Vinetz J, Gamboa D, Torres K. Epidemiological characteristics of P. vivax asymptomatic infections in the Peruvian Amazon. Frontiers In Cellular And Infection Microbiology 2022, 12: 901423. PMID: 36118037, PMCID: PMC9471197, DOI: 10.3389/fcimb.2022.901423.Peer-Reviewed Original ResearchConceptsCase-control studyAntimalarial treatmentMalaria symptomsHematological parametersControl individualsCommon malaria symptomsNegative microscopy resultsHistory of comorbiditiesMalaria control measuresClinical immunityMalaria microscopyAsymptomatic infectionMalaria infectionEpidemiological characteristicsChronic infectionMost infectionsMalaria eliminationDay 21Positive qPCR resultsInfected individualsPopulation screeningSYM groupInfectionQPCR resultsLast monthMalaria transmission structure in the Peruvian Amazon through antibody signatures to Plasmodium vivax
Rosado J, Carrasco-Escobar G, Nolasco O, Garro K, Rodriguez-Ferruci H, Guzman-Guzman M, Llanos-Cuentas A, Vinetz JM, Nekkab N, White MT, Mueller I, Gamboa D. Malaria transmission structure in the Peruvian Amazon through antibody signatures to Plasmodium vivax. PLOS Neglected Tropical Diseases 2022, 16: e0010415. PMID: 35533146, PMCID: PMC9119515, DOI: 10.1371/journal.pntd.0010415.Peer-Reviewed Original ResearchConceptsSerological exposure markersP. vivaxMalaria transmissionAntibody levelsRecent exposureRoutine malaria surveillanceHigher antibody levelsCross-sectional surveyLight microscopySeropositive casesAntibody signaturesPast infectionRisk factorsPrevalence surveyHigher oddsMalaria surveillanceExposure markersElimination effortsSignificant associationSocio-DemographicEpidemiological analysisSerological surveillanceParticular epidemiologyLocal transmissionVivax
2021
Cohort profile: the Mâncio Lima cohort study of urban malaria in Amazonian Brazil
Johansen IC, Rodrigues PT, Tonini J, Vinetz J, Castro MC, Ferreira MU. Cohort profile: the Mâncio Lima cohort study of urban malaria in Amazonian Brazil. BMJ Open 2021, 11: e048073. PMID: 34789490, PMCID: PMC8727682, DOI: 10.1136/bmjopen-2020-048073.Peer-Reviewed Original ResearchConceptsMalaria transmissionCohort studyPopulation-based open cohort studySARS-CoV-2 IgG antibodiesConsecutive cross-sectional surveysLaboratory-confirmed malariaSustained malaria transmissionOpen cohort studyConsecutive study visitsHigh-risk individualsSimilar study protocolMalaria prevalence ratesCross-sectional surveyMorbidity informationIgG antibodiesStudy protocolStudy visitOverall burdenPrevalence ratesBlood samplesMalaria diagnosisTravel historyControl interventionsStudy participantsGreater riskAsymptomatic Plasmodium vivax malaria in the Brazilian Amazon: Submicroscopic parasitemic blood infects Nyssorhynchus darlingi
Almeida GG, Costa PAC, da Silva Araujo M, Gomes GR, Carvalho AF, Figueiredo MM, Pereira DB, Tada MS, Medeiros JF, da Silva Soares I, Carvalho LH, Kano FS, de Castro M, Vinetz JM, Golenbock DT, do Valle Antonelli L, Gazzinelli RT. Asymptomatic Plasmodium vivax malaria in the Brazilian Amazon: Submicroscopic parasitemic blood infects Nyssorhynchus darlingi. PLOS Neglected Tropical Diseases 2021, 15: e0009077. PMID: 34714821, PMCID: PMC8555776, DOI: 10.1371/journal.pntd.0009077.Peer-Reviewed Original ResearchConceptsAsymptomatic individualsP. vivaxP. vivax malaria patientsP. vivax infectionVivax malaria patientsPlasmodium vivax malariaLow endemicity areaMalaria patientsSymptomatic patientsAsymptomatic infectionVivax malariaVivax infectionInfectious reservoirLow parasitemiaUninfected controlsEndemic regionsMalaria transmissionInfectivity ratesMalaria parasitesBiochemical parametersParasitemiaBloodPotential rolePatientsInfectionHeterogeneity in response to serological exposure markers of recent Plasmodium vivax infections in contrasting epidemiological contexts
Rosado J, White MT, Longley RJ, Lacerda M, Monteiro W, Brewster J, Sattabongkot J, Guzman-Guzman M, Llanos-Cuentas A, Vinetz JM, Gamboa D, Mueller I. Heterogeneity in response to serological exposure markers of recent Plasmodium vivax infections in contrasting epidemiological contexts. PLOS Neglected Tropical Diseases 2021, 15: e0009165. PMID: 33591976, PMCID: PMC7909627, DOI: 10.1371/journal.pntd.0009165.Peer-Reviewed Original ResearchConceptsSerological exposure markersBlood-stage infectionLow transmission settingsP. vivax infectionPlasmodium vivax infectionHigh transmission settingsVivax infectionTransmission settingsAntibody titersAntibody responseExposure markersDifferent transmission intensitiesIgG responsesSerological markersPrevious infectionReceiver Operating Characteristic (ROC) analysisEndemic settingsMalaria eliminationPeruvian cohortOperating characteristics analysisP. vivaxMalaria controlRecent exposureInfectionEpidemiological context
2018
Acceptability of a herd immunity-focused, transmission-blocking malaria vaccine in malaria-endemic communities in the Peruvian Amazon: an exploratory study
White SE, Harvey SA, Meza G, Llanos A, Guzman M, Gamboa D, Vinetz JM. Acceptability of a herd immunity-focused, transmission-blocking malaria vaccine in malaria-endemic communities in the Peruvian Amazon: an exploratory study. Malaria Journal 2018, 17: 179. PMID: 29703192, PMCID: PMC5921293, DOI: 10.1186/s12936-018-2328-z.Peer-Reviewed Original ResearchConceptsTransmission-blocking malaria vaccineTransmission-blocking vaccinesMalaria vaccineMalaria transmission-blocking vaccineMalaria hypoendemic regionMalaria vaccine strategyProspective cohort studyMalaria-endemic communitiesMalaria-endemic regionsPre-validated questionnaireCohort studyVaccine strategiesMalaria infectionMethodsThe studyVaccineMalaria controlMalaria researchMultiple injectionsOne-thirdIndustrialized worldInjectionAcceptabilityCohortInfectionStudyAsymptomatic Plasmodium vivax parasitaemia in the low-transmission setting: the role for a population-based transmission-blocking vaccine for malaria elimination
Martin TCS, Vinetz JM. Asymptomatic Plasmodium vivax parasitaemia in the low-transmission setting: the role for a population-based transmission-blocking vaccine for malaria elimination. Malaria Journal 2018, 17: 89. PMID: 29466991, PMCID: PMC5822557, DOI: 10.1186/s12936-018-2243-3.Peer-Reviewed Original ResearchMeSH KeywordsAfricaAmericasAsiaAsymptomatic DiseasesDisease Transmission, InfectiousHumansMalaria VaccinesMalaria, VivaxParasitemiaConceptsTransmission-blocking vaccinesPlasmodium vivax parasitaemiaLow transmission settingsControl of transmissionVivax parasitaemiaChloroquine resistanceAsymptomatic carriageMalaria eliminationNew therapiesPlasmodium vivaxImportant causeCarrier stateImmunological interactionsVaccineOnward infectionInfectionParasite transmissionEradication effortsMosquitoesMorbidityParasitaemiaTherapyMortalityDiagnosisVivax
2016
Reactive Case Detection for Plasmodium vivax Malaria Elimination in Rural Amazonia
Fontoura PS, Finco BF, Lima NF, de Carvalho JF, Vinetz JM, Castro MC, Ferreira MU. Reactive Case Detection for Plasmodium vivax Malaria Elimination in Rural Amazonia. PLOS Neglected Tropical Diseases 2016, 10: e0005221. PMID: 27941968, PMCID: PMC5179126, DOI: 10.1371/journal.pntd.0005221.Peer-Reviewed Original ResearchConceptsMalaria eliminationIndex caseElimination effortsControl householdsCorrelates of infectionReactive case detectionMixed-effects logistic regression modelResidual malaria transmissionCase detection strategiesMolecular genotypingMalaria elimination effortsP. vivax transmissionTotal parasite biomassReal-time polymerase chain reactionQuantitative real-time polymerase chain reactionLogistic regression modelsP. vivax diversityPotential confoundersAsymptomatic carriersPolymerase chain reactionCase detectionIndex householdsQPCR-positive samplesMalaria burdenPlasmodium vivaxEpidemiology of Plasmodium vivax Malaria in Peru
Rosas-Aguirre A, Gamboa D, Manrique P, Conn JE, Moreno M, Lescano AG, Sanchez JF, Rodriguez H, Silva H, Llanos-Cuentas A, Vinetz JM. Epidemiology of Plasmodium vivax Malaria in Peru. American Journal Of Tropical Medicine And Hygiene 2016, 95: 133-144. PMID: 27799639, PMCID: PMC5201219, DOI: 10.4269/ajtmh.16-0268.Peer-Reviewed Original ResearchConceptsMalaria transmissionP. vivaxMalaria controlPlasmodium falciparum malaria casesMicroscopy-confirmed casesP. vivax malaria transmissionFalciparum malaria casesPlasmodium vivax malariaVivax malaria transmissionPublic health problemGlucose-6-phosphate dehydrogenase deficiencyFuture malaria controlImplementation of surveillanceCombination therapyVivax malariaClinical trialsMalaria casesPlasmodium vivaxElimination effortsHealth problemsP. falciparumMosquito transmissionDehydrogenase deficiencyVivaxOngoing surveillance activitiesPopulation genomics studies identify signatures of global dispersal and drug resistance in Plasmodium vivax
Hupalo DN, Luo Z, Melnikov A, Sutton PL, Rogov P, Escalante A, Vallejo AF, Herrera S, Arévalo-Herrera M, Fan Q, Wang Y, Cui L, Lucas CM, Durand S, Sanchez JF, Baldeviano GC, Lescano AG, Laman M, Barnadas C, Barry A, Mueller I, Kazura JW, Eapen A, Kanagaraj D, Valecha N, Ferreira MU, Roobsoong W, Nguitragool W, Sattabonkot J, Gamboa D, Kosek M, Vinetz JM, González-Cerón L, Birren BW, Neafsey DE, Carlton JM. Population genomics studies identify signatures of global dispersal and drug resistance in Plasmodium vivax. Nature Genetics 2016, 48: 953-958. PMID: 27348298, PMCID: PMC5347536, DOI: 10.1038/ng.3588.Peer-Reviewed Original Research