Highly pathogenic avian influenza H7, Australia (OIE, November 15 2012): 1 New Poultry Outbreak, NSW

[Giuseppe]

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


Highly pathogenic avian influenza, Australia


Information received on 15/11/2012 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 09/11/2012
  • Date of pre-confirmation of the event 14/11/2012
  • Report date 15/11/2012
  • Date submitted to OIE 15/11/2012
  • Reason for notification Reoccurrence of a listed disease
  • Date of previous occurrence 11/1997
  • Manifestation of disease Clinical disease
  • Causal agent Highly pathogenic avian influenza virus
  • Serotype H7
  • Nature of diagnosis Laboratory (basic), Laboratory (advanced)
  • This event pertains to a defined zone within the country
• New outbreaks
  • Summary of outbreaks
    • Total outbreaks: 1
      • Outbreak Location - NEW SOUTH WALES ( Maitland )
        • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
          • Birds - 50000 - 5000 - 5000 - ? ? ?
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 10.00% - 10.00% - 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
  • The affected birds are free range layer hens.
  • The property has several dams that attract wild ducks.
  • A Restricted Area of 3 km diameter surrounded by 7 km diameter Control Area has been established around the property, which is under quarantine restriction.
  • Tracing is underway.
  • Depopulation has commenced.
  • The N type has not yet been determined.
• Control measures
  • Measures applied
    • Quarantine
    • Movement control inside the country
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
  • Measures to be applied
    • Stamping out
    • Disinfection of infected premises/establishment(s)
• Diagnostic test results
  • Laboratory name and type: Elizabeth Macarthur Agricultural Institute ( Local laboratory )
    • Tests and results: Species - Test - Test date - Result
      • Birds - polymerase chain reaction (PCR) - 14/11/2012 - Positive
  • Laboratory name and type: Australian Animal Health Laboratory ( National laboratory )
    • Tests and results: Species - Test - Test date - Result
      • Birds - gene sequencing - 15/11/2012 - Positive
      • Birds - real-time PCR - 15/11/2012 - Positive
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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[tetano]

Re: Highly pathogenic avian influenza H7, Australia (OIE, November 15 2012): 1 New Poultry Outbreak, NSW

Australian farm quarantined to contain bird flu outbreak

Australia?s first outbreak of a highly pathogenic bird flu virus in 15 years should be contained by a cull of 50,000 chickens, authorities said on Friday, although they don?t know what caused the case at an egg farm in New South Wales state.

The Department of Primary Industries said all the chickens at the property in Maitland, 160 kilometres north of Sydney, would be destroyed after the H7 virus was detected last week.

The H7 strain is highly pathogenic to birds but is not related to the H5N1 strain, which was first detected in 1997 in Hong Kong and has since killed 366 people worldwide.

The department?s chief veterinary officer, Ian Roth, said the strain did not present any risks to food safety from poultry and eggs.

The owners of the infected farm have been quarantined as experts try to find the source of the virus, often wild birds.

..

http://www.scmp.com/news/asia/article/1083927/australian-farm-quarantined-contain-bird-flu-outbreak