a virological taxon (i.e. a man-made concept) included in the genus Marburgvirus, family Filoviridae, order Mononegavirales. The species has two virus members, Marburg virus (MARV) and Ravn virus (RAVV). The members of the species (i.e. the actual physical entities) are called Marburg marburgviruses. The name Marburg marburgvirus is derived from the city of Marburg in Hesse, West Germany (where Marburg virus was first discovered) and the taxonomic suffix marburgvirus (which denotes a marburgvirus species). Species inclusion criteria A virus that fulfills the criteria for being a member of the genus Marburgvirus is a member of the species Marburg marburgvirus if it has the properties of marburgviruses (because there is currently only marburgvirus species) and if its genome differs from that of Marburg virus (variant Musoke) by <30% at the nucleotide level. References Further reading External links ICTV Report: Filoviridae International Committee on Taxonomy of Viruses (ICTV) Primate diseases Animal viral diseases Arthropod-borne viral fevers and viral haemorrhagic fevers Biological weapons Hemorrhagic fevers Marburgviruses Tropical diseases Zoonoses Chiroptera-borne diseases Filoviridae Virus genera