Viruses causing HPS vary by region (1): Argentina: Andes, Araraquara, Bermejo, Juquitiba, Lechiguanas, Leguna Negra, Maciel, and Oran virus Brazil: Araraquara and Juquitiba virus Chile and eastern Bolivia: Andes virus North America: Sin Nombre, Black Creek Canal, Bayou, and Monongahela virus Panama: Choclo virus Paraguay and Bolivia: Leguna Negra virus Hantaviruses occur throughout the world in wild rodents, which shed the virus throughout life in saliva, urine, and feces.