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
Bas-Congo virus Bas-Congo virus The Bas-Congo virus (BASV), named after the former DRC province of Bas-Congo (now Kongo Central), in which it was first discovered, is a novel rhabdovirus associated with a small outbreak of hemorrhagic fever in Mangala village in 2009. The disease is characterized by a fulminant course and can be fatal. In the 2009 outbreak, two out of three people died. The surviving patient and a further asymptomatic person developed antibodies against BASV. The virus was discovered after the exclusion of all known viral agents causing hemorrhagic fever. RNA copies of BASV were found in the serum of the