Negative-strand RNA viruses caused many widely known diseases. Many of these are transmitted by arthropods, including the Rift Valley fever virus and the tomato spotted wilt virus. Among vertebrates, bats and rodents are common vectors for many viruses, including the Ebola virus and the rabies virus, transmitted by bats and other vertebrates, and the Lassa fever virus and hantaviruses, transmitted by rodents. Influenza viruses are common among birds and mammals. Human-specific −ssRNA viruses include the measles virus and the mumps virus.
