Highly pathogenic avian influenza, Nepal (OIE, March 26 2012): 2 New H5N1 Poultry Outbreaks

[Giuseppe]

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


Highly pathogenic avian influenza, Nepal


Information received on 26/03/2012 from Dr Nar Bahadur Rajwar, Director General, Department of Livestock Services, Department of Livestock Services, Lalitpur, Nepal

• Summary
  • Report type Follow-up report No. 4
  • Start date 10/11/2011
  • Date of first confirmation of the event 14/11/2011
  • Report date 26/03/2012
  • Date submitted to OIE 26/03/2012
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 30/10/2010
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza virus
  • Serotype H5N1
  • Nature of diagnosis Suspicion, Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
  • This event pertains to the whole country
  • Related reports
    • Immediate notification (02/12/2011)
    • Follow-up report No. 1 (12/02/2012)
    • Follow-up report No. 2 (15/02/2012)
    • Follow-up report No. 3 (11/03/2012)
    • Follow-up report No. 4 (26/03/2012)
• New outbreaks
  • Outbreak 1 - Khadakagaun, Saibu-5, Lalitpur, BAGMATI
    • Date of start of the outbreak 16/03/2012
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 9600 ? 6646 ? 6646 ? 2954 ? 0
      • Affected Population:
        • Two adjoining commercial poultry farms having layers in two sheds and broilers in one shed
  • Outbreak 2 - Dullu, Sheshnarayan-8, Kathmandu, BAGMATI
    • Date of start of the outbreak 05/03/2012
    • Outbreak status Resolved (23/03/2012)
    • Epidemiological unit Farm
    • Affected animals: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
      • Birds ? 15220 ? 15160 ? 15160 ? 60 ? 0
      • Affected Population:
        • A commercial layer farm located in a village where ducks, quails and pigs were raised separately inside the farm premises
• Summary of outbreaks
  • Total outbreaks: 2
  • Total animals affected: Species ? Susceptible ? Cases ? Deaths ? Destroyed ? Slaughtered
    • Birds ? 24820 ? 21806 ? 21806 ? 3014 ? 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 87.86% - 87.86% - 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
• Epidemiological comments
  • Stamping out followed by cleaning, disinfection, disposal and sealing of the infected premises have already been completed at the Dullu layer farm whereas stamping out has been completed and cleaning and disinfection of the infected premises is being done at the commercial poultry farm at Sainbu-5.
  • Post-operative surveillance activities are being intensively carried out throughout the country.
• Control measures
  • Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Screening
    • Disinfection of infected premises/establishment(s)
    • Dipping / Spraying
    • Vaccination prohibited
    • No treatment of affected animals
  • Measures to be applied
    • No other measures
• Diagnostic test results
  • Laboratory name and type Central Veterinary Laboratory (National laboratory)
    • Tests and results: Species ? Test - Test date ? Result
      • Birds - polymerase chain reaction (PCR) - 14/03/2012 ? Positive
      • Birds - polymerase chain reaction (PCR) - 20/03/2012 - Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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