Low pathogenic avian influenza H5 (poultry), Australia (OIE, March 8 2013): 1 New Outbreak

[Giuseppe]

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


Low pathogenic avian influenza (poultry), Australia


Information received on 08/03/2013 from Dr Mark Schipp, Chief Veterinary Officer, Ministry of Agriculture, Fisheries and Forestry, Ministry of Agriculture, Fisheries and Forestry, Canberra, Australia

• Summary
  • Report type Immediate notification
  • Date of start of the event 14/02/2013
  • Date of pre-confirmation of the event 08/03/2013
  • Report date 08/03/2013
  • Date submitted to OIE 08/03/2013
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 05/06/2012
  • Manifestation of disease Sub-clinical infection
  • Causal agent Low pathogenic avian influenza virus
  • Serotype H5
  • Nature of diagnosis Laboratory (advanced)
  • This event pertains to a defined zone within the country
• New outbreaks (1)
  • Outbreak 1 - Henley Brook, WESTERN AUSTRALIA
    • Date of start of the outbreak 14/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Village
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 95 – 1 - 0 – 95 – 0
      • Affected population: One duck from a flock of backyard poultry (ducks and chickens) was found to be infected with low pathogenic avian influenza H5. This was an incidental finding.
• Summary of outbreaks
  • Total outbreaks: 1
    • Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds – 95 – 1 – 0 – 95 – 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 1.05% - 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
  • All backyard birds involved have been euthanased.
  • Tracing and testing of contact birds is continuing.
  • A 1km Restricted Area has been established around the premises.
  • The N type is yet to be determined.
• Control measures
  • Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • No vaccination
    • No treatment of affected animals
  • Measures to be applied
    • Disinfection of infected premises/establishment(s)
• Diagnostic test results
  • Laboratory name and type – Species – Test - Test date – Result
    • Australian Animal Health Laboratory (National laboratory) – Birds - gene sequencing - 08/03/2013 – Positive
    • Australian Animal Health Laboratory (National laboratory) – Birds - reverse transcription - polymerase chain reaction (RT-PCR) - 08/03/2013 – Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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