High Quality Content by WIKIPEDIA articles! African swine fever virus (ASFV) is the causative agent of African swine fever (ASF). ASFV is a large, double-stranded DNA virus which replicates in the cytoplasm of infected cells, and is the only member of the Asfarviridae family. ASFV infects domestic pigs, warthogs and bushpigs, as well as soft ticks (Ornithodoros), which are likely vectors. ASFV is the only virus with a DNA genome transmitted by arthropods. The virus causes a lethal haemorraghic disease in domestic pigs. Some isolates can cause death of animals within as little as a week after infection. In all other species, the virus causes no obvious disease. ASFV is endemic to sub-Saharan Africa and exists in the wild through a cycle of infection between ticks and wild pigs, bushpigs and warthogs. ASFV was first described after European settlers brought pigs into areas endemic with ASFV and, as such, is an example of an `emerging infection`.