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USA - Outbreaks of low pathogenic H7N3 bird flu virus in turkey farms in California - OIE

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  • USA - Outbreaks of low pathogenic H7N3 bird flu virus in turkey farms in California - OIE

    PARIS (Reuters) - The United States has reported an outbreak of the low pathogenic H7N3 bird flu virus at a turkey farm in California, the World Organisation for Animal Health (OIE) said on Friday.

    The outbreak at a farm in Stanislaus County led to all 26,258 birds of the flock exposed to the virus being killed and disposed of, the Paris-based OIE said in a note on its website, citing a report from the U.S. Department of Agriculture.

    The United States has reported an outbreak of the low pathogenic H7N3 bird flu virus at a turkey farm in California, the World Organisation for Animal Health (OIE) said on Friday.
    “Addressing chronic disease is an issue of human rights – that must be our call to arms"
    Richard Horton, Editor-in-Chief The Lancet

    ~~~~ Twitter:@GertvanderHoek ~~~ GertvanderHoek@gmail.com ~~~

  • #2
    Low pathogenic avian influenza (poultry),
    United States of America
    Information received on 12/09/2018 from Dr John Clifford, Official Delegate, Chief Trade Advisor, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
    Summary
    Report type Immediate notification
    Date of start of the event 06/09/2018
    Date of confirmation of the event 08/09/2018
    Report date 12/09/2018
    Date submitted to OIE 12/09/2018
    Reason for notification Recurrence of a listed disease
    Date of previous occurrence 30/04/2018
    Manifestation of disease Sub-clinical infection
    Causal agent Low pathogenic avian influenza virus
    Serotype H7N3
    Nature of diagnosis Laboratory (advanced)
    This event pertains to a defined zone within the country
    New outbreaks (1)
    Outbreak 1 Stanislaus County, Stanislaus, California
    Date of start of the outbreak 06/09/2018
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 26258 26258 0
    Affected population Commercial meat-type turkey flock
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Killed and disposed of Slaughtered
    Birds 26258 ** 26258 0
    Outbreak statistics
    Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
    Birds ** ** ** **
    *Removed from the susceptible population through death, destruction and/or slaughter
    **Not calculated because of missing information
    Epidemiology
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    Epidemiological comments As part of the pre-slaughter testing and surveillance program for H5/H7 Avian Influenza, H7N3 low pathogenic avian influenza (LPAI) was detected in a commercial meat-type turkey flock. Partial HA /NA sequencing determined the H7 and N3 to be a low pathogenic virus of North American wild bird lineage. Further characterization is pending virus recovery. The affected flock was depopulated and the carcasses have been rendered. The USDA Animal Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) are conducting an epidemiological investigation of the event and have increased testing as a result of the detection. Ten additional commercial poultry premises located within the 10km zone are being tested for influenza virus.
    Control measures
    Measures applied
    • Movement control inside the country
    • Surveillance outside containment and/or protection zone
    • Surveillance within containment and/or protection zone
    • Quarantine
    • Stamping out
    • Zoning
    • Vaccination permitted (if a vaccine exists)
    • No treatment of affected animals
    Measures to be applied
    • Disinfection
    Diagnostic test results
    Laboratory name and type Species Test Test date Result
    California Animal Health & Food Safety Laboratory (Local laboratory) Birds agar-gel precipitation (AGP) test 06/09/2018 Positive
    National Veterinary Services Laboratory (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 08/09/2018 Positive
    National Veterinary Services Laboratory (National laboratory) Birds virus sequencing Pending
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    Map of outbreak locations
    “Addressing chronic disease is an issue of human rights – that must be our call to arms"
    Richard Horton, Editor-in-Chief The Lancet

    ~~~~ Twitter:@GertvanderHoek ~~~ GertvanderHoek@gmail.com ~~~

    Comment


    • #3
      Low pathogenic avian influenza (poultry),
      United States of America
      Information received on 19/09/2018 from Dr John Clifford, Official Delegate, Chief Trade Advisor, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
      Summary
      Report type Follow-up report No. 1
      Date of start of the event 06/09/2018
      Date of confirmation of the event 08/09/2018
      Report date 19/09/2018
      Date submitted to OIE 19/09/2018
      Reason for notification Recurrence of a listed disease
      Date of previous occurrence 30/04/2018
      Manifestation of disease Sub-clinical infection
      Causal agent Low pathogenic avian influenza virus
      Serotype H7N3
      Nature of diagnosis Laboratory (advanced)
      This event pertains to a defined zone within the country
      Related reports Immediate notification (12/09/2018)
      Follow-up report No. 1 (19/09/2018)
      New outbreaks (1)
      Outbreak 1 Stanislaus County, Stanislaus, California
      Date of start of the outbreak 12/09/2018
      Outbreak status Continuing (or date resolved not provided)
      Epidemiological unit Farm
      Affected animals
      Species Susceptible Cases Deaths Killed and disposed of Slaughtered
      Birds 35000 35000 0
      Affected population Commercial meat-type turkey flock
      Summary of outbreaks Total outbreaks: 1
      Total animals affected
      Species Susceptible Cases Deaths Killed and disposed of Slaughtered
      Birds 35000 ** 35000 0
      Outbreak statistics
      Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
      Birds ** ** ** **
      *Removed from the susceptible population through death, destruction and/or slaughter
      **Not calculated because of missing information
      Epidemiology
      Source of the outbreak(s) or origin of infection
      • Unknown or inconclusive
      Epidemiological comments As part of the pre-slaughter testing and surveillance program for H5/H7 Avian Influenza, H7N3 low pathogenic avian influenza (LPAI) was detected in a commercial meat-type turkey flock. Surveillance conducted within 10km of the initial farm has detected H7N3 LPAI in another commercial meat-turkey farm. Partial sequence data from the second detection is consistent with the index. State officials have quarantined the affected premises and implemented movement controls. Depopulation and disposal of the birds on the premises is near completion.
      Control measures
      Measures applied
      • Stamping out
      • Quarantine
      • Movement control inside the country
      • Zoning
      • Surveillance outside containment and/or protection zone
      • Surveillance within containment and/or protection zone
      • Vaccination permitted (if a vaccine exists)
      • No treatment of affected animals
      Measures to be applied
      • Disinfection
      Diagnostic test results
      Laboratory name and type Species Test Test date Result
      California Animal Health & Food Safety Laboratory (Local laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 12/09/2018 Positive
      National Veterinary Services Laboratory (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 14/09/2018 Positive
      National Veterinary Services Laboratory (National laboratory) Birds virus sequencing 11/09/2018 Positive
      Future Reporting
      The event is continuing. Weekly follow-up reports will be submitted.
      ...
      http://www.oie.int/wahis_2/public/wa...reportid=28017
      "Safety and security don't just happen, they are the result of collective consensus and public investment. We owe our children, the most vulnerable citizens in our society, a life free of violence and fear."
      -Nelson Mandela

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