African swine fever,
China (People's Rep. of)
Information received on 07/09/2018 from Dr Zhang Zhongqui, Director General , China Animal Disease Control Centre, Veterinary Bureau, Ministry of Agriculture, Beijing, China (People's Rep. of)
Summary
Report type Follow-up report No. 4
Date of start of the event 01/08/2018
Date of confirmation of the event 03/08/2018
Report date 07/09/2018
Date submitted to OIE 07/09/2018
Date event resolved 04/12/2018
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 (basic), Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (03/08/2018)
Follow-up report No. 1 (04/08/2018)
Follow-up report No. 2 (10/08/2018)
Follow-up report No. 3 (16/08/2018)
Follow-up report No. 4 (07/09/2018)
Follow-up report No. 5 (30/09/2018)
Follow-up report No. 6 (09/10/2018)
Follow-up report No. 7 (12/10/2018)
Follow-up report No. 8 (12/10/2018)
Follow-up report No. 9 (16/10/2018)
Follow-up report No. 10 (17/10/2018)
Follow-up report No. 11 (08/01/2019)
New outbreaks (4)
Outbreak 1 Yinjia village, Shenbei New District, Shenyang, Liaoning
Date of start of the outbreak 07/08/2018
Outbreak status Resolved (04/12/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 140 1 0 140 0
Outbreak 2 Cailuo yi village, Shenbei New District, Shenyang, Liaoning
Date of start of the outbreak 07/08/2018
Outbreak status Resolved (04/12/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 160 3 0 160 0
Outbreak 3 Cailuo yi village, Shenbei New District, Shenyang, Liaoning
Date of start of the outbreak 07/08/2018
Outbreak status Resolved (04/12/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 55 1 0 55 0
Outbreak 4 Cailuo yi village, Shenbei New District, Shenyang, Liaoning
Date of start of the outbreak 07/08/2018
Outbreak status Resolved (04/12/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 216 2 0 216 0
Summary of outbreaks Total outbreaks: 4
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 571 7 0 571 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Swine 1.23% 0.00% 0.00% 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
Epidemiological comments Blockade, disinfection and screening detection measures continue to be implemented in the infected areas in Liaoning Province. Up to August 29, 246,100 farms and 63,861,600 pigs were screened. Investigation of the infected areas in Liaoning province has been completed. In total 19,373 pigs were killed and disposed of, including 8,116 pigs in the epidemic area and 11,257 pigs in the process of screening and tracing. Seven new pathogenic positive cases were detected from 59 samples collected from 4 pig farms in 2 towns of Shenbei New District. Details of 7 pathogenic positive cases are provided below. 1. 3 pig farms in Cailuo yi village of Cailuo subdistrict. Farm 1: There were 160 pigs on the farm. 15 whole blood samples were taken from the farm, from which 3 samples tested positive. Farm 2: There were 55 pigs on the farm. 10 whole blood samples were taken from the farm, from which one sample tested positive. Farm 3: There were 216 pigs on the farm. 20 whole blood samples were taken from the farm, from which 2 samples tested positive. 2. 1 pig farms in Yinjia village of Yinjia subdistrict. The Farm: There were 140 pigs on the farm. 14 whole blood samples were taken from the farm, from which one sample tested positive. All pigs were killed, disposal of bodies, all contact materials and disinfection for infected sites have been completed. World Animal Health Information and Analysis Department (WAHIAD, OIE) comment: In this report, the numbers of Susceptible and Killed and disposed of animals in the first outbreak (Shenbei Street) were updated by the country.
Control measures
Measures applied
  • Control of wildlife reservoirs
  • Stamping out
  • Quarantine
  • Movement control inside the country
  • Screening
  • Zoning
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Traceability
  • Disinfection
  • Surveillance outside containment and/or protection zone
  • Vaccination permitted (if a vaccine exists)
  • No treatment of affected animals
Measures to be applied
  • No other measures
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations