Genus “Marburg-like viruses”

Type Species	Marburg virus	(MARV)

Distinguishing Features

1.	Almost no antigenic cross-reactivity with Ebola viruses,
2.	Virion length is about 790  nm as opposed to 970  nm with Ebola viruses,
3.	Genome length of 19.1  kb as opposed to 18.9  kb with Ebola viruses,
4.	Single gene overlap as opposed to several overlaps with Ebola viruses,
5.	Glycoprotein expression does not involve transcriptional editing of gene four,
6.	Protein profile distinct from Ebola viruses; however homogenous for all strains,
7.	Glycoprotein gene nulceotide difference of 57% compared with Ebola viruses,
8.	Fatality rate in humans is about 25%.

List of Species Demarcation Criteria in the Genus

Not applicable.

List of Species in the Genus

Official virus species names are in italics. Tentative virus species names, alternative names ( ), strains or serotypes are not italicized. Virus names, location and date of isolation ( ), genome sequence accession numbers [ ], and assigned abbreviations ( ) are:

Species in the Genus

Marburg virus		(MARV)
Strain Musoke (Kenya, 1980)	[Z12132]
Strain Ratayczak (West Germany, 1967)
Strain Popp (West Germany, 1967)
Strain Voege (Yugoslavia, 1967)
Strain Ozolin (Zimbabwe, 1975)
Strain Marburg Ravn (Kenya, 1987)

Tentative Species in the Genus

None reported.