Social history of viruses of encephalitis, of which 105 were fatal, were recorded. A new paramyxovirus was discovered in a victim's brain; it was named Nipah virus, after the village where he had lived. The infection was caused by a virus from fruit bats, after their colony had been disrupted by deforestation. The bats had moved to trees nearer the pig farm and the pigs caught the virus from their droppings. Several highly lethal viral pathogens are members of the "Filoviridae". Filoviruses are filament-like viruses that cause viral haemorrhagic fever, and include the Ebola and Marburg viruses. The Marburg virus attracted widespread press attention
Chapare virus Chapare virus Chapare virus causes hemorrhagic fever and is a member of the arenavirus family of viruses. It causes Chapare hemorrhagic fever. The only known outbreak of Chapare virus infection occurred in the village of Samuzabeti, Chapare Province, Bolivia, in January 2003. A small number of people were infected. One person died. The specific transmission vector is not known, but is suspected to be a rodent, in keeping with other members of the arenavirus family, which includes the Lassa virus. In December 2003, an outbreak of the Chapare virus occurred near Cochabamba, Bolivia. The symptoms include: headache, fever, body aches,