PrevalenceParasitesHost-Parasite InteractionsParasite LoadPlasmodium falciparumProtozoan ProteinsParasitic Diseases, AnimalParasite Egg CountMalariaCross-Sectional StudiesIntestinal Diseases, ParasiticMalaria, FalciparumToxoplasmaDNA, ProtozoanRisk FactorsApicomplexaLife Cycle StagesParasitic DiseasesAntimalarialsAntigens, ProtozoanTrypanosoma cruziParasitemiaTrematodaPlasmodium bergheiProtozoan InfectionsBrazilProtozoan Infections, AnimalHelminthsErythrocytesCestodaGenes, ProtozoanHaemosporidaLeishmaniaAge DistributionAntibodies, ProtozoanHelminthiasis, AnimalAge FactorsParasitologyGenome, ProtozoanAntiprotozoal AgentsPolymerase Chain ReactionFecesSex DistributionDrug ResistanceLeishmania majorTrematode InfectionsMolecular Sequence DataSchistosoma mansoniSex FactorsNematode InfectionsParasitic Sensitivity TestsLeishmania donovaniRural PopulationHealth SurveysQuestionnairesSporozoitesIndiaPlasmodium vivaxUnited StatesChloroquineLeishmaniasis, CutaneousChagas DiseasePlasmodium yoeliiAnophelesUrban PopulationOocystsLeishmaniasisHelminthiasisLeishmaniasis, VisceralChinaPhylogenyMicrosporidiaFish DiseasesGenotypeGiardia lambliaTrophozoitesSocioeconomic FactorsAcanthocephalaLogistic ModelsTrypanosoma brucei bruceiTrypanosomaEndemic DiseasesCestode InfectionsCoccidiosisInsect VectorsGiardiasisToxoplasmosisAnthelminticsIncidenceEctoparasitic InfestationsSchizontsInfant, NewbornEukaryotaArtemisininsTime FactorsMerozoitesMalaria, VivaxRNA, ProtozoanEntamoeba histolyticaCohort Studies