| lassa fever | A severe form of epidemic fever first identified in Lassa, Nigeria. It is caused by the Lassa virus, a member of Arenaviridae. The illness is characterised by high fever, sore throat, muscle aches, skin rash (with haemorrhages), headache, abdominal pain, vomiting and diarrhoea. A rat serves as a reservoir for the illness, but person to person transmission is also reported. (27 Sep 1997) |
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| lassa haemorrhagic fever | A severe form of epidemic fever first identified in Lassa, Nigeria. It is caused by the Lassa virus, a member of Arenaviridae. The illness is characterised by high fever, sore throat, muscle aches, skin rash (with haemorrhages), headache, abdominal pain, vomiting and diarrhoea. A rat serves as a reservoir for the illness, but person to person transmission is also reported. (27 Sep 1997) |
| Lassa virus | <virology> Virulent and highly transmissible arenavirus whose normal host is a rodent Mastomys natalensis), first recorded from Nigeria. (18 Nov 1997) |
| lcm-lassa complex viruses | One of two groups of viruses in the arenavirus genus and considered part of the old world complex. It includes lassa virus and lymphocytic choriomeningitis virus, although the latter has worldwide distribution now. (12 Dec 1998) |
| african swine fever virus | The lone species of the genus african swine fever-like viruses. The virus causes a fatal disease among domestic pigs in africa and a less virulent infection in europe. The virus is present in soft ticks (ornithodoros moubata), warthogs, or domestic pigs. Originally listed as a species of iridoviridae, the virus exhibits some similarities to poxviridae but its differences warranted placement in a separate genus of an, as yet unknown, family. (12 Dec 1998) |
| Argentine haemorrhagic fever virus | A member of the Arenaviridae. (05 Mar 2000) |
| Bolivian haemorrhagic fever virus | A member of the Arenavirus group of single-stranded RNA viruses also known as Machupo virus; primary reservoir in rodents; produces multiple abnormalities in coagulation system including widespread capillary leak syndrome, which can be fatal. (05 Mar 2000) |
| bovine ephemeral fever virus | A rhabdovirus causing bovine ephemeral fever in cattle. (05 Mar 2000) |
| malignant catarrhal fever virus | A herpesvirus of wide distribution causing malignant catarrhal fever of cattle; sheep and wildebeests harbor inapparent infections and may transmit the virus to cattle. (05 Mar 2000) |
| viral haemorrhagic fever virus | <virology> An epidemic viral illness seen in southern Sudan and Zaire, caused by the Ebola virus. The illness is characterised by fever, malaise, muscle aches, respiratory symptoms, diarrhoea, vomiting, epistaxis, haemoptysis, haematemesis, rash, tremors and subconjunctival haemorrhages. Transmitted by close bodily contact with infected individuals (blood, faeces and body fluids). Incubation is-21 days with initial symptoms of fever and headache. There is no specific treatment and death can occur within 10 days. (27 Sep 1997) |
| rift valley fever virus | A mosquito-borne species of the phlebovirus genus and member of the sandfly fever group viruses found in eastern, central, and southern africa, producing massive hepatitis, abortion, and death in sheep, goats, cattle, and other animals. It also has caused disease in humans. (12 Dec 1998) |
| pharyngoconjunctival fever virus | One of several types of adenoviruses associated with outbreaks of fever and pharyngitis, sometimes with conjunctivitis, especially in service recruits and people in boarding schools. (05 Mar 2000) |
| colourado tick fever virus | A species of reovirus transmitted by the tick dermacentor andersonii and causing fever, chills, aching head and limbs, and often vomiting. It occurs in the northwestern united states, except the pacific coast. (12 Dec 1998) |
| Crimean-Congo haemorrhagic fever virus | A virus of the genus Nairovirus (family Bunyaviridae) from Africa and the southern USSR, carried by ticks (Hyalomma and Amblyomma) and found in human blood; the cause of Crimean-Congo haemorrhagic fever. (05 Mar 2000) |
| haemorrhagic fever virus | <virology> Any of many viruses in the families Flaviviridae, Filoviridae and Bunyaviridae that are often spread by rodents and biting insects, these viruses cause diseasescharacterised by fever and bleeding (such as Ebola). (09 Oct 1997) |