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CSF in Japan: new case in a wild boar

A dead wild boar confirmed positive to CSF was found within the 10km radius from the affected farm.

Wednesday 19 September 2018 (1 years ago)
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Since confirmation of the first case of classical swine fever in Japan in 26 years, the country's veterinary authorities have informed the OIE of a new case in a wild boar found dead within the 10-kilometer perimeter from the affected farm.

PPC Japon

Epidemiological comments

Affected farm:

  • Stamping out : All pigs in the farm were culled by 10th September 2018.
  • Disposal of dead animals: All bodies were buried by 10th September.
  • Disinfection for contaminated materials and tools as well as inside of the farm was completed by 11th September 2018.

Monitoring and survey of farms

  • Thirteen farms are designated for intensive monitoring, which have epidemiological relationship with the affected farm.
  • Clinical test, ELISA and PCR were carried out on 13 farms, and all results were negative to classical swine fever.

Surveillance of wildlife (the wild boar reported in this follow up report)

  • Gifu prefecture started the survey from 13th September 2018.
  • On 13th September, a dead wild boar was found in the zone within 3 to 10 km radius from the affected farm (shipment restriction zone).
  • On 14th September the dead wild boar was confirmed positive to CSF by sequencing at National Institute of Animal Health (NIAH).

Epidemiological investigation

  • Since 9th September 2018, the National Epidemiological Investigation Team has been dispatched.
  • In order to facilitate the identification of cause and route of infection as well as to prevent the spread of the disease by increasing the experts of team members, Intensified Epidemiological Investigation Team for the CSF case has been established on 12th September 2018. An expert for wildlife joined on 14th September.
  • NIAH published the result of gene analysis of the CSFV of the case. NIAH considered that the virus was likely to be introduced from overseas as the virus belongs to subgenotype 2.1 5.

Communication to producers

  • On 9 September 2018, Ministry of Agriculture, Forestry and Fisheries re-ordered all prefectures that any farm should comply with Biosecurity Standard and Guidelines for CSF such as adequate disinfection against invasion of CSF virus, early notification, and prevention of wild animals, etc.

Tuesday September 18, 2018/ OIE.
http://www.oie.int

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