Paramyxovirus related to Hendra (and measles and mumps) carried by flying foxes in Malaysia, and responsible for infecting pigs there. In 1999, the virus crossed over from pigs to humans, where it killed over 100 people. With no known vaccine or cure, the CDC has placed Nipah in the same class as ebola and AIDS. Transmission so far is from pig to human. Initially mistaken for a form of Japanese encephalitis, the virus was isolated by a research team under the direction of Dr. Kenneth Lam Sai Kit at the University of Malaya. While infected pigs have been destroyed, Nipah can also infect dogs, cats, and horses.

Source: New York Times, August 15, 2000