2024
A simple, field-applicable method to increase the infectivity of wild isolates of Plasmodium falciparum to mosquito vectors
Ouattara S, Hien D, Nao E, Paré P, Guissou E, Cohuet A, Morlais I, Yerbanga R, Dabiré K, Ouédraogo J, Mouline K, Lefèvre T. A simple, field-applicable method to increase the infectivity of wild isolates of Plasmodium falciparum to mosquito vectors. Malaria Journal 2024, 23: 135. PMID: 38711028, PMCID: PMC11075210, DOI: 10.1186/s12936-024-04969-0.Peer-Reviewed Original ResearchConceptsDirect membrane feeding assaysGametocyte densityHuman-to-mosquito transmissionDonor bloodLow gametocyte densitiesMembrane feeding assaysPlasmodium falciparum gametocytesTransmission-blocking interventionsWhole bloodInfection rateFalciparum gametocytesInfectious reservoirNaive serumAsymptomatic individualsMosquito infectionHuman donorsRemoval of plasmaEndemic countriesSerumPlasmodiumParasite isolatesInfectionBlood treatmentGametocytesPlasma volume
2021
Effect of seasonal malaria chemoprevention plus azithromycin on Plasmodium falciparum transmission: gametocyte infectivity and mosquito fitness
Yaméogo K, Yerbanga R, Ouattara S, Yao F, Lefèvre T, Zongo I, Nikièma F, Compaoré Y, Tinto H, Chandramohan D, Greenwood B, Belem A, Cohuet A, Ouédraogo J. Effect of seasonal malaria chemoprevention plus azithromycin on Plasmodium falciparum transmission: gametocyte infectivity and mosquito fitness. Malaria Journal 2021, 20: 326. PMID: 34315475, PMCID: PMC8314489, DOI: 10.1186/s12936-021-03855-3.Peer-Reviewed Original ResearchConceptsAddition of azithromycinMalaria chemopreventionSulfadoxine-pyrimethamineGametocyte infectivityAsexual Plasmodium falciparumDirect membrane feeding assaysSeasonal malaria chemopreventionPlacebo-controlled trialPlasmodium falciparum transmissionMembrane feeding assaysInfectivity of gametocytesControl of malariaPresence of malariaMalaria transmission periodDays post treatmentAnopheles gambiae mosquitoesGametocyte prevalenceMethodsThe studyConclusionThis studyMalaria transmissionP. falciparumControl childrenMosquito transmissionAppropriate interventionsChemoprevention
2014
Experimental study of the relationship between Plasmodium gametocyte density and infection success in mosquitoes; implications for the evaluation of malaria transmission-reducing interventions
Da D, Churcher T, Yerbanga R, Yaméogo B, Sangaré I, Ouedraogo J, Sinden R, Blagborough A, Cohuet A. Experimental study of the relationship between Plasmodium gametocyte density and infection success in mosquitoes; implications for the evaluation of malaria transmission-reducing interventions. Experimental Parasitology 2014, 149: 74-83. PMID: 25541384, DOI: 10.1016/j.exppara.2014.12.010.Peer-Reviewed Original ResearchConceptsGametocyte densityParasite densityBlood samplesInfected bloodMouse bloodInfectious blood samplesMembrane feeding assaysPlasmodium berghei infectionTransmission-reducing interventionsPlasmodium falciparum samplesBlood dilutionEvaluation of transmissionInfected mouse bloodBerghei infectionPlasmodium infectionMosquito infectivityAnopheles coluzzii mosquitoesInhibitory factorMonoclonal antibodiesBloodAccurate relative measuresInfectionUninfected bloodHost bloodColuzzii mosquitoes
2013
Comparison of field-based xenodiagnosis and direct membrane feeding assays for evaluating host infectiousness to malaria vector Anopheles gambiae
Gouagna L, Yao F, Yameogo B, Dabiré R, Ouédraogo J. Comparison of field-based xenodiagnosis and direct membrane feeding assays for evaluating host infectiousness to malaria vector Anopheles gambiae. Acta Tropica 2013, 130: 131-139. PMID: 24262642, DOI: 10.1016/j.actatropica.2013.10.022.Peer-Reviewed Original ResearchConceptsMosquito bitesOocyst infectionDirect membrane feeding assaysInfectious mosquito bitesAnopheles mosquitoesMembrane feeding assaysMalaria-endemic areasLow gametocyte densitiesCross-sectional surveyGametocyte densityEndemic areasDay 7Classical microscopic examinationHost infectiousnessBlood smearsOocyst prevalenceXenodiagnosisHost skinMembrane feederInfectionInfectious individualsInfectiousnessMicroscopic examinationHuman subjectsChildren