African swine fever,
China (People's Rep. of)
Information received on 24/10/2018 from Dr Yu Kangzhen, National Chief Veterinary Officer , Veterinary Bureau , Ministry of Agriculture , Beijing, China (People's Rep. of)
Summary
Report type Immediate notification
Date of start of the event 19/10/2018
Date of confirmation of the event 20/10/2018
Report date 22/10/2018
Date submitted to OIE 24/10/2018
Date event resolved 29/12/2018
Reason for notification First occurrence of a listed disease
Manifestation of disease Clinical disease
Causal agent African swine fever virus
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (22/10/2018)
Follow-up report No. 1 (31/10/2018)
Follow-up report No. 2 (16/11/2018)
Follow-up report No. 3 (08/01/2019)
New outbreaks (2)
Outbreak 1 Tianba Village,Niuchang Township, Zhenxiong, Zhaotong, Yunnan
Date of start of the outbreak 19/10/2018
Outbreak status Resolved (27/12/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 804 298 298 506 0
Affected population After ASF occurred in Niuchang township, Zhenxiong county, Zhaotong city, in Yunnan Province, control measures such as blockade, killing and disposal and disinfection were applied, in accordance with the requirements of “the Contingency Plan for ASF” and “Technical Regulation on ASF Control (Trial)”, the total of 2642 pigs in coherent herd were killed in the affected areas, and disposed of the culled pigs in a biosafe method. No new outbreaks and positive samples have been found for the 6 consecutive weeks in surveillance and monitoring. Local animal husbandry and veterinary authorities organized the acceptance for laboratory tests and on-site assessments in the affected areas. The results of the acceptance were in compliance with the regulations on the blockade lift in the affected areas, and the ASF outbreak was solved. The local government decided to lift the blockade at 00:00 o’clock on 27th of December 2018. The Ministry of Agriculture and Rural Affairs requires the local animal husbandry and veterinary sectors to continue to strengthen the surveillance and monitoring and take active prevention and control measures, as to prevent the recurrence of ASF.
Outbreak 2 Muxiang Village,Muxiang Township, Zhenxiong, Zhaotong, Yunnan
Date of start of the outbreak 19/10/2018
Outbreak status Resolved (27/12/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 353 247 247 106 0
Affected population After ASF occurred in Muxiang township, Zhenxiong county, Zhaotong city, in Yunnan Province, control measures such as blockade, killing and disposal and disinfection were applied, in accordance with the requirements of “the Contingency Plan for ASF” and “Technical Regulation on ASF Control (Trial)”, the total of 5064 pigs in coherent herd were killed in the affected areas, and disposed of the culled pigs in a biosafe method. No new outbreaks and positive samples have been found for the 6 consecutive weeks in surveillance and monitoring. Local animal husbandry and veterinary authorities organized the acceptance for laboratory tests and on-site assessments in the affected areas. The results of the acceptance were in compliance with the regulations on the blockade lift in the affected areas, and the ASF outbreak was solved. The local government decided to lift the blockade at 00:00 o’clock on 27th of December 2018. The Ministry of Agriculture and Rural Affairs requires the local animal husbandry and veterinary sectors to continue to strengthen the surveillance and monitoring and take active prevention and control measures, as to prevent the recurrence of ASF.
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 1157 545 545 612 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Swine 47.10% 47.10% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Disinfestation
  • Disinfection
  • Zoning
  • Stamping out
  • Official disposal of carcasses, by-products and waste
  • Official destruction of animal products
  • Quarantine
  • Traceability
  • Screening
  • Surveillance outside containment and/or protection zone
  • Movement control inside the country
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
China Animal Health and Epidemiology Center, National Research center for exotic animal diseases (National laboratory) Swine polymerase chain reaction (PCR) 20/10/2018 Positive
China Animal Health and Epidemiology Center, National Research center for exotic animal diseases (National laboratory) Swine real-time PCR 20/10/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations