21 Jan 2013

Highly pathogenic avian influenza, Nepal (OIE World Animal Health Information System, January 21 2013, edited)

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

Highly pathogenic avian influenza, Nepal

Information received on 21/01/2013 from Dr Nar Bahadur Rajwar, Director General, Department of Livestock Services, Department of Livestock Services, Lalitpur, Nepal

  • Summary
    • Report type Follow-up report No. 5
    • Date of start of the event 27/08/2012
    • Date of pre-confirmation of the event 03/09/2012
    • Report date 21/01/2013
    • Date submitted to OIE 21/01/2013
    • Reason for notification Reoccurrence of a listed disease
    • Date of previous occurrence 30/03/2012
    • Manifestation of disease Clinical disease
    • Causal agent Highly pathogenic avian influenza virus
    • Serotype H5N1
    • Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
    • This event pertains to the whole country
    • Related reports
      • Immediate notification (14/10/2012)
      • Follow-up report No. 1 (02/11/2012)
      • Follow-up report No. 2 (24/12/2012)
      • Follow-up report No. 3 (06/01/2013)
      • Follow-up report No. 4 (18/01/2013)
      • Follow-up report No. 5 (21/01/2013)
  • New outbreaks (4) 
    • Outbreak 1  - Kosheghari, Pokhara Sub Metro Polis 17, Kaski, GANDAKI
      • Date of start of the outbreak 02/01/2013
      • Outbreak status Resolved (16/01/2013)
      • Epidemiological unit Farm
      • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds  - 1100 – 272 – 272 – 828 – 0
        • Affected population: A commercial broiler farm with birds raised in an intensive farming system
    • Outbreak 2  - Simpani, Pokhara Sub Metro Polis 1, Kaski, GANDAKI
      • Date of start of the outbreak 06/01/2013
      • Outbreak status Resolved (16/01/2013)
      • Epidemiological unit Farm
      • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds  - 255 – 150 – 150 – 105 – 0
        • Affected population: A commercial broiler farm with birds raised in an intensive farming system
    • Outbreak 3  - Batulechaur, Pokhara Sub Metro Polis 16, Kaski, GANDAKI
      • Date of start of the outbreak 06/01/2013
      • Outbreak status Resolved (16/01/2013)
      • Epidemiological unit Farm
      • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds  - 200 – 90 – 90 – 110 – 0
        • Affected population: A commercial broiler farm with birds raised in an intensive farming system
    • Outbreak 4  - Sedibagar, Sarangkot - 7, Kaski, GANDAKI
      • Date of start of the outbreak 06/01/2013
      • Outbreak status Resolved (16/01/2013)
      • Epidemiological unit Farm
      • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds  - 1605 – 600 – 600 – 1005 – 0
        • Affected population: A commercial broiler farm with birds raised in an intensive farming system
  • Summary of outbreaks
    • Total outbreaks: 4
      • Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
        • Birds – 3160 – 1112 – 1112 – 2048 – 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 35.19% - 35.19% - 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
    • Birds showed respiratory distress, nervous signs and all affected birds died.
    • Cleaning and disinfection activities in the infected premises are completed.
    • Intensive surveillance activities are ongoing throughout the country. 
  • Control measures
    • Measures applied
      • Control of wildlife reservoirs
      • 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 – Species – Test - Test date – Result
      • Central Veterinary Laboratory (National laboratory) – Birds - polymerase chain reaction (PCR) - 13/01/2013 – Positive
      • Central Veterinary Laboratory (National laboratory) – Birds - rapid tests - 13/01/2013 – Positive
  • Future Reporting
    • The event is continuing. Weekly follow-up reports will be submitted.

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