Hantavirus: A group of viruses that cause hemorrhagic fever and pneumonia. The hantaviruses include the hantaan virus that causes Korean (and Manchurian) hemorrhagic fever. Hantaviruses are transmitted to humans by direct or indirect contact with the saliva and excreta of rodents, such as deer mice, field mice, and ground voles.
Subscribe to MedicineNet's General Health Newsletter
Last Editorial Review: 6/9/2016