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


Low pathogenic avian influenza (poultry) H5N2, Chinese Taipei


Information received on 03/06/2013 from Dr Ping-Cheng Yang, Director, Animal Technology Institute Taοwan, Council of Agriculture, Taοwan, Chinese Taipei
  • Summary
    • Report type Follow-up report No. 7
    • Date of start of the event 12/11/2012
    • Date of pre-confirmation of the event 20/11/2012
    • Report date 03/06/2013
    • Date submitted to OIE 03/06/2013
    • Reason for notification Reoccurrence of a listed disease
    • Date of previous occurrence 13/07/2012
    • Manifestation of disease Sub-clinical infection
    • Causal agent Low pathogenic avian influenza virus
    • Serotype H5N2
    • Nature of diagnosis Laboratory (advanced)
    • This event pertains to a defined zone within the country
    • Related reports
      • Immediate notification (22/11/2012)
      • Follow-up report No. 1 (21/12/2012)
      • Follow-up report No. 2 (04/01/2013)
      • Follow-up report No. 3 (18/01/2013)
      • Follow-up report No. 4 (15/03/2013)
      • Follow-up report No. 5 (18/04/2013)
      • Follow-up report No. 6 (19/04/2013)
      • Follow-up report No. 7 (03/06/2013)
  • New outbreaks (1)
    • Outbreak 1 - Ma-Gong, P'ENG-HU
      • Date of start of the outbreak 15/05/2013
      • Outbreak status Continuing (or date resolved not provided)
      • Epidemiological unit Farm
      • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds - 13 – 1 – 0 – 13 – 0
        • Affected population Broiler (sentinel chicken)
  • Summary of outbreaks
    • Total outbreaks: 1
      • Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds – 13 – 1 – 0 – 13 – 0
      • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
        • Birds - 7.69% - 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
    • Sentinel chickens were placed on the H5N2 infected native chicken farm reported in the follow-up report No. 2 on 4 January 2013.
    • The farm was depopulated previously by the local disease control centre (LDCC).
    • In order to restock the chickens in the same premises, the farmer applied to LDCC for sentinel chickens test.
    • The results showed one chicken with positive reaction to H5N2 subtype virus and the virus was defined as low pathogenic by national laboratory.
    • Cleaning and disinfection were implemented in the farm which was emptied for 21 days.
  • Control measures
    • Measures applied
      • Stamping out
      • Quarantine
      • Movement control inside the country
      • Screening
      • Zoning
      • Disinfection of infected premises/establishment(s)
      • Vaccination prohibited
      • No treatment of affected animals
    • Measures to be applied
      • No other measures
  • Diagnostic test results
    • Laboratory name and type – Species – Test - Test date – Result
      • Animal Health Research Institute (AHRI) (National laboratory) – Birds - gene sequencing - 22/05/2013 – Negative
      • Animal Health Research Institute (AHRI) (National laboratory) – Birds - haemagglutination inhibition test (HIT) - 22/05/2013 – Negative
      • Animal Health Research Institute (AHRI) (National laboratory) – Birds - intravenous pathogenicity index (IVPI) test - 03/06/2013 – Negative
      • Animal Health Research Institute (AHRI) (National laboratory) – Birds - virus isolation - 22/05/2013 – Positive
  • Future Reporting
    • The event is continuing. Weekly follow-up reports will be submitted.
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