CoccidiaOocystsEimeriaCoccidiosisEimeriidaeIsosporaRobenidineCryptosporidium parvumCoccidiostatsEimeria tenellaCryptosporidiumSarcocystisCryptosporidiosisFecesPoultry DiseasesToxoplasmaGiardiaParasite Egg CountChickensParasitologyCyclosporaEucoccidiidaWater SupplyWaterDNA, ProtozoanWater PurificationFiltrationFresh WaterCyclosporiasisWater PollutionGiardiasisDisinfectionPotassium DichromateSporozoitesSpores, ProtozoanImmunomagnetic SeparationIsosporiasisFluorescent Antibody Technique, DirectAnophelesCattle DiseasesSewage