Publications by authors named "Anthony F Craig"

Article Synopsis
  • Researchers studied the spread of African swine fever virus (ASFV) in warthogs and ticks in South Africa, finding it may have moved beyond the controlled area established in 1935.
  • They collected over 5,000 ticks from various locations and detected ASFV in multiple tick pools, identifying several genotypes in both controlled and uncontrolled areas of the country.
  • The study confirms the presence of ASFV circulation outside the controlled region but emphasizes the necessity for further surveillance and research on the vector capabilities of different tick species.
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African swine fever virus (ASFV) causes a lethal and contagious disease of domestic pigs. In South Africa, the virus historically circulated in warthogs and ornithodorid ticks that were only found in warthog burrows in the north of the country. Regulations implemented in 1935 to prevent transfer of infected animals or products to the south initially proved effective but from 2016 there have been outbreaks of disease in the south that cannot be traced to transfer of infection from the north.

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Sylvatic circulation of African swine fever virus (ASFV) in warthogs and ticks that live in warthog burrows historically occurred in northern South Africa. Outbreaks of the disease in domestic pigs originated in this region. A controlled area was declared in the north in 1935 and regulations were implemented to prevent transfer of potentially infected suids or products to the rest of the country.

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A prospective study was undertaken during 2013 and 2014, to determine the prevalence of African horse sickness virus (AHSV) in Culicoides midges and the incidence of infection caused by the virus in 28 resident horses on two equine establishments on the East Rand, Gauteng Province, South Africa. Field caught Culicoides midges together with whole blood samples from participating horses were collected every two weeks at each establishment. Culicoides midges and blood samples were tested for the presence of AHSV RNA by real-time quantitative reverse transcription polymerase chain reaction.

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