Claim: Marburg virus (a hemorrhagic fever virus of the Filoviridae family of viruses)  was responsible for two death in Koltsovo, Soviet Union between 1988-1990.
Evidence: Marburg virus is a hemorrhagic fever virus of the Filoviridae family of viruses and a member of the species Marburg marburgvirus, genus Marburgvirus. Koltsovo, Soviet Union Koltsovo, Soviet Union 1988 1990 1 1