noun Etymology: New Latin, from hanta- (from Hantaan, river in South Korea near where rodents carrying the virus were collected 1974-78) + virus any of a genus (Hantavirus of the family Bunyaviridae) of single-stranded RNA viruses transmitted especially by rodent feces and urine and including viruses causing serious pulmonary disease or hemorrhagic fevers marked by renal necrosis

Merriam-Webster's Collegiate Dictionary