Highly pathogenic avian influenza, China (People's Rep. of) (OIE, December 12 2011, edited): 1 New H5N1 Poultry Outbreak, Tibet

[Giuseppe]

[Source: OIE, full page: (LINK). Edited.]


Highly pathogenic avian influenza, China (People's Rep. of)


Information received on 12/12/2011 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 Immediate notification
  • Start date 02/12/2011
  • Date of first confirmation of the event 12/12/2011
  • Report date 12/12/2011
  • Date submitted to OIE 12/12/2011
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 25/05/2010
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza virus
  • Serotype H5N1
  • Nature of diagnosis Clinical, Laboratory (advanced)
  • This event pertains to a defined zone within the country
• New outbreaks
  • Outbreak 1 - Sangda, Duilongdeqing, Lhasa, TIBET
    • Date of start of the outbreak 02/12/2011
    • Outbreak status Resolved (12/12/2011)
    • Epidemiological unit Village
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 1865 ? 290 ? 290 ? 1575 ? 0
• Summary of outbreaks
  • Total outbreaks: 1
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 15.55% - 15.55% - 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
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Screening
    • Zoning
    • Vaccination in response to the outbreak (s)
    • Disinfection of infected premises/establishment(s)
    • Dipping / Spraying
    • No treatment of affected animals
  • Measures to be applied
    • No other measures
• Diagnostic test results
  • Laboratory name and type Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences (national reference laboratory for avian influenza) (OIE?s Reference Laboratory)
    • Tests and results: Species ? Test - Test date ? Result
      • Birds - haemagglutination inhibition test (HIT) - 12/12/2011 ? Positive
      • Birds - intravenous pathogenicity index (IVPI) test - 12/12/2011 ? Positive
      • Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 12/12/2011 ? Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

(?)
-
-------