Investigation of African swine fever outbreaks in pigs outside the controlled areas of South Africa, 2012–2017

Van Rensburg Leana Janse, Van Heerden Juanita, Penrith Marie-Louise, Heath Livio, Rametse Thapelo, Etter Eric. 2020. Investigation of African swine fever outbreaks in pigs outside the controlled areas of South Africa, 2012–2017. Journal of the South African Veterinary Association, 91:a1997, 9 p.

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Published version - Anglais
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Abstract : South Africa historically experienced sporadic African swine fever (ASF) outbreaks in domestic pigs in the northern parts of the country. This was subsequently indicated to be because of spillover from the sylvatic cycle of ASF between warthog and tampans (soft ticks) in the area. South Africa declared this area an ASF-controlled area in 1935, and the area is still controlled in terms of the Animal Diseases Act, 1984 (Act 35 of 1984). Two main epidemics of ASF in domestic pigs were identified outside of the South African ASF-controlled area. The first occurred in 2012 with outbreaks in Gauteng and Mpumalanga provinces, and the second occurred in 2016–2017 with outbreaks in the North West, Free State and Northern Cape provinces. These were the first ASF epidemics in South Africa associated with transmission of the disease via a domestic cycle. This study found that the spread of ASF in these epidemics was mainly via auctions, swill feeding and scavenging. These three aspects need to be addressed in terms of awareness and education on the disease including implementation of biosecurity measures in order to prevent future ASF outbreaks in South Africa. Specific biosecurity measures should be implemented in the semi-commercial sector to prevent ASF-infected pigs and pig products from being moved to naïve pigs and therefore spreading the disease.

Mots-clés Agrovoc : Peste porcine africaine, Virus peste porcine africaine, épidémie, Porcin, Enquête pathologique, Surveillance épidémiologique, Santé animale, Contrôle de maladies, Transmission des maladies, Biosécurité

Mots-clés géographiques Agrovoc : Afrique du Sud

Mots-clés libres : African swine fever, Domestic cycle, Biosecurity, Disease control, Auctions, Swill

Classification Agris : L73 - Animal diseases

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Auteurs et affiliations

  • Van Rensburg Leana Janse, University of Pretoria (ZAF) - auteur correspondant
  • Van Heerden Juanita, ARC (ZAF)
  • Penrith Marie-Louise, University of Pretoria (ZAF)
  • Heath Livio, ARC (ZAF)
  • Rametse Thapelo, University of Pretoria (ZAF)

Source : Cirad-Agritrop (

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