Viral hemorrhagic fevers (VHFs) are caused by a group of genetically distinct zoonotic viruses, which include [greater than or equal to] 4 virus families (Filoviridae, Arenaviridae
, Bunyaviridae, and Flaviviridae).
The causative agent of Lassa fever is Lassa virus (LASV), a member of the Arenaviridae
An etiologic agent was isolated from cerebrospinal fluid of a patient in the 2003 cluster, and identified by EM as belonging to the family Arenaviridae
Evidence suggesting the placement of viruses in families Arenaviridae
, Paramyxoviridae, or Poxviridae.
Lymphocytic choriomeningitis virus (LCMV), an Old World arenavirus, family Arenaviridae
, is a zoonotic virus maintained in the house mouse (Mus musculus) and can be carried by pet and laboratory rodents (1-7); human exposure occurs through aerosolized excreta or by direct rodent contact.