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California - Low pathogenic avian influenza H7N3 (poultry), Merced County, Merced (OIE, 03-17-2015)

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  • California - Low pathogenic avian influenza H7N3 (poultry), Merced County, Merced (OIE, 03-17-2015)

    Low pathogenic avian influenza (poultry),
    United States of America
    Information received on 17/03/2015 from Dr John Clifford, Deputy Administrator, 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 09/03/2015
    Date of pre-confirmation of the event 10/03/2015
    Report date 17/03/2015
    Date submitted to OIE 17/03/2015
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 17/09/2014
    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 Merced County, Merced, CALIFORNIA
    Date of start of the outbreak 09/03/2015
    Outbreak status Continuing (or date resolved not provided)
    Epidemiological unit Farm
    Affected animals
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 61000
    Affected population An 18-week-old commercial turkey flock.
    Summary of outbreaks Total outbreaks: 1
    Total animals affected
    Species Susceptible Cases Deaths Destroyed Slaughtered
    Birds 61000 **
    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 The USDA Animal Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) are conducting a comprehensive epidemiological investigation of this event. Epidemiological summary of the event as of 17 March 2015: ? A commercial tom turkey flock exhibited coughing with a slight increase in mortality. Samples were submitted for laboratory testing and were confirmed positive for influenza A virus (IAV) H7N3 LPAI. ? North American H7N3 LPAI based upon partial HA and NA sequence obtained directly from swab specimen; virus isolation pending. ? The infected premises was placed under quarantine following preliminary findings and an epidemiological investigation was initiated. ? Follow-up surveillance and testing on 10 epidemiologically associated farms was negative for IAV. The epidemiological investigation and response to the event are continuing.
    Control measures
    Measures applied
    • Quarantine
    • Movement control inside the country
    • Zoning
    • 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
    California Animal Health and Food Safety (CAHFS) Laboratory (Local laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 10/03/2015 Positive
    California Animal Health and Food Safety (CAHFS) Laboratory (Local laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 16/03/2015 Negative
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 12/03/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus isolation Pending
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 12/03/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../
    http://www.oie.int/wahis_2/public/wa...reportid=17371
    "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

  • #2
    Low pathogenic avian influenza (poultry),
    United States of America
    Information received on 24/03/2015 from Dr John Clifford, Deputy Administrator, 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 09/03/2015
    Date of pre-confirmation of the event 10/03/2015
    Report date 24/03/2015
    Date submitted to OIE 24/03/2015
    Reason for notification Reoccurrence of a listed disease
    Date of previous occurrence 17/09/2014
    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 (17/03/2015)
    Follow-up report No. 1 (24/03/2015)
    Outbreaks There are no new outbreaks in this report
    Epidemiology
    Source of the outbreak(s) or origin of infection
    • Unknown or inconclusive
    Epidemiological comments The USDA Animal Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) are conducting a comprehensive epidemiological investigation of this event. Epidemiological summary of the event as of 23 March 2015: ? Samples were confirmed positive for wild bird lineage North American H7N3 LPAI based upon full genome sequence obtained from virus isolate. ? All surveillance testing of commercial poultry farms located within a 10km control area has been negative for influenza A virus. ? Depopulation of the infected premises will begin this week. The epidemiological investigation and response to the event are continuing.
    Control measures
    Measures applied
    • Quarantine
    • Movement control inside the country
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
    Measures to be applied
    • Stamping out
    Diagnostic test results
    Laboratory name and type Species Test Test date Result
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus isolation 14/03/2015 Positive
    National Veterinary Services Laboratories (NVSL) (National laboratory) Birds virus sequencing 18/03/2015 Positive
    Future Reporting
    The event is continuing. Weekly follow-up reports will be submitted.
    .../
    http://www.oie.int/wahis_2/public/wa...reportid=17413
    "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

    Comment


    • #3
      Low pathogenic avian influenza (poultry),
      United States of America
      Information received on 01/04/2015 from Dr John Clifford, Deputy Administrator, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
      Summary
      Report type Follow-up report No. 2
      Date of start of the event 09/03/2015
      Date of pre-confirmation of the event 10/03/2015
      Report date 01/04/2015
      Date submitted to OIE 01/04/2015
      Reason for notification Reoccurrence of a listed disease
      Date of previous occurrence 17/09/2014
      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 (17/03/2015)
      Follow-up report No. 1 (24/03/2015)
      Follow-up report No. 2 (01/04/2015)
      Outbreaks There are no new outbreaks in this report
      Epidemiology
      Source of the outbreak(s) or origin of infection
      • Unknown or inconclusive
      Epidemiological comments The USDA Animal Plant Health Inspection Service (APHIS) and the California Department of Food and Agriculture (CDFA) are conducting a comprehensive epidemiological investigation of this event. Epidemiological summary of the event as of 31 March 2015: ? Samples were confirmed positive for wild bird lineage North American H7N3 LPAI based upon full genome sequence obtained from virus isolate. ? All surveillance testing of commercial poultry farms located within a 10km control area has been negative for influenza A virus. ? Depopulation of the infected premises is in progress. The epidemiological investigation and response to the event are continuing.
      Control measures
      Measures applied
      • Stamping out
      • Quarantine
      • Movement control inside the country
      • Zoning
      • Vaccination prohibited
      • No treatment of affected animals
      Measures to be applied
      • No other measures
      Future Reporting
      The event is continuing. Weekly follow-up reports will be submitted.
      .../
      http://www.oie.int/wahis_2/public/wa...reportid=17457
      "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

      Comment

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