Hantavirus (family Bunyaviridae, genus Hantavirus) infection is caused by viruses that can infect humans with two serious illnesses: hemorrhagic fever with renal syndrome (HFRS), and Hantavirus pulmonary syndrome (HPS).

Hantaviruses are found without causing symptoms within various species of rodents and are passed to humans by exposure to the urine, feces, or saliva of those infected rodents. Infection is commonly associated with disturbing the droppings or nests of rodents within confined spaces. The disturbed particles are inhaled to cause infection. Ten different hantaviruses have been identified as important in humans. Each is found in specific geographic regions, and therefore is spread by different rodent carriers. Further, each type of virus causes a slightly different form of illness in its human hosts. Hantaan virus is carried by the striped field mouse, and exists in Korea, China, Eastern Russia, and the Balkans....