Disease ReservoirsEndarterectomy, CarotidCarotid StenosisAsymptomatic DiseasesFresh WaterRodentiaZoonosesAnimals, WildPhytoplanktonEutrophicationCladoceraVirus LatencyRiversWater MicrobiologyPhylogenyRodent DiseasesChiropteraPopulation DensityZooplanktonBrazilSeasonsPeromyscusWater MovementsHantavirus InfectionsWater SupplyUrinary Reservoirs, ContinentDisease VectorsHantavirusEnvironmental MonitoringHIV-1