African swine fever,
China (People's Rep. of)
Information received on 02/06/2020 from Dr Huang Baoxu, Secretary of the Party Leadership Group, Animal Health and Epidemiology Centre, Ministry of Agriculture and Rural Affairs, Qingdao, China (People's Rep. of)
Summary
Report type Follow-up report No. 2
Date of start of the event 30/03/2020
Date of confirmation of the event 01/04/2020
Report date 02/06/2020
Date submitted to OIE 02/06/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 28/11/2019
Manifestation of disease Clinical disease
Causal agent African swine fever virus
Nature of diagnosis Clinical, Laboratory (basic)
This event pertains to a defined zone within the country
Related reports Immediate notification (04/04/2020)
Follow-up report No. 1 (13/04/2020)
Follow-up report No. 2 (02/06/2020)
New outbreaks (1)
Outbreak 1 Hexi Village,Longquansi Township, Yongdeng, Lanzhou, Gansu
Date of start of the outbreak 22/05/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 9927 280 92 9835
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine 9927 280 92 9835
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Swine 2.82% 0.93% 32.86% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Screening
  • Traceability
  • Quarantine
  • Official destruction of animal products
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Zoning
  • Disinfection
  • Disinfestation
  • 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
Gansu Provincial Animal Disease Control Center (Local laboratory) Swine polymerase chain reaction (PCR) 29/05/2020 Positive
Gansu Provincial Animal Disease Control Center (Local laboratory) Swine real-time PCR 29/05/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations