Abstract
Ornithodoros soft ticks are the only known vector and reservoir of the African swine fever virus, a major lethal infectious disease of Suidae. The co-feeding event for virus transmission and maintenance among soft tick populations has been poorly documented. We infected Ornithodoros moubata, a known tick vector in Africa, with an African swine fever virus strain originated in Africa, to test its ability to infect O. moubata through co-feeding on domestic pigs. In our experimental conditions, tick-to-tick virus transmission through co-feeding failed, although pigs became infected through the infectious tick bite.
Highlights
African swine fever (ASF) is a lethal disease of Suidae caused by the African swine fever virus (ASFV)
(1980) conducted experimental infections of young warthogs, that are most commonly reported to be infected in the wild, and the only stage that remains in close contact with endophilous soft ticks in burrows [11]
We experimentally assess the ASFV transmission through co-feeding, using infected and uninfected O. moubata ticks and an ASFV strain originally isolated from the same tick species in the wild [22]
Summary
African swine fever (ASF) is a lethal disease of Suidae caused by the African swine fever virus (ASFV). Other studies have demonstrated that soft ticks can become infected without vertebrate hosts through ASFV vertical transmission to descendants [9,12] We experimentally assess the ASFV transmission through co-feeding, using infected and uninfected O. moubata ticks and an ASFV strain originally isolated from the same tick species in the wild [22].
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