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Highly pathogenic avian influenza H7N3, Mexico (OIE, May 8 2013): 5 New Poultry Outbreaks

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  • Highly pathogenic avian influenza H7N3, Mexico (OIE, May 8 2013): 5 New Poultry Outbreaks

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


    Highly pathogenic avian influenza H7N3, Mexico


    Information received on 08/05/2013 from Dr Joaquín Braulio Delgadillo Álvarez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA) Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentación, Ministerio de Agricultura, Ganadería, Desarrollo rural, Pesca y Alimentación, Mexico, Mexico
    • Summary
      • Report type Follow-up report No. 7
      • Date of start of the event 03/01/2013
      • Date of pre-confirmation of the event 07/01/2013
      • Report date 07/05/2013
      • Date submitted to OIE 08/05/2013
      • Reason for notification Reoccurrence of a listed disease
      • Date of previous occurrence 29/09/2012
      • Manifestation of disease Clinical disease
      • Causal agent Highly pathogenic avian influenza virus
      • Serotype H7N3
      • Nature of diagnosis Clinical, Laboratory (basic)
      • This event pertains to a defined zone within the country
      • Related reports
        • Immediate notification (08/01/2013)
        • Follow-up report No. 1 (16/01/2013)
        • Follow-up report No. 2 (18/02/2013)
        • Follow-up report No. 3 (28/02/2013)
        • Follow-up report No. 4 (23/03/2013)
        • Follow-up report No. 5 (17/04/2013)
        • Follow-up report No. 6 (23/04/2013)
        • Follow-up report No. 7 (07/05/2013)
    • New outbreaks (5)
      • Outbreak 1 - San Diego de Alejandría, San Diego de Alejandría, JALISCO
        • Date of start of the outbreak 01/03/2013
        • Outbreak status Resolved (02/03/2013)
        • Epidemiological unit Village
        • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
          • Birds - 16 – 11 – 10 – 6 – 0
      • Outbreak 2 - San José Iturbide, San José Iturbide, GUANAJUATO
        • Date of start of the outbreak 03/04/2013
        • Outbreak status Resolved (04/05/2013)
        • Epidemiological unit Farm
        • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
          • Birds - 319398 - … – 0 – 319398 – 0
      • Outbreak 3 - Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
        • Date of start of the outbreak 10/04/2013
        • Outbreak status Resolved (11/04/2013)
        • Epidemiological unit Farm
        • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
          • Birds - 100601 - … – 0 – 100601 – 0
      • Outbreak 4 - Tepatitlán de Morelos, Tepatitlán de Morelos, JALISCO
        • Date of start of the outbreak 29/04/2013
        • Outbreak status Resolved (01/05/2013)
        • Epidemiological unit Farm
        • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
          • Birds - 320000 – 0 – 0 – 320000 – 0
      • Outbreak 5 - Palmar de Bravo, Palmar de Bravo, PUEBLA
        • Date of start of the outbreak 01/05/2013
        • Outbreak status Resolved (07/05/2013)
        • Epidemiological unit Farm
        • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
          • Birds - 150000 – 75000 – 40000 – 110000 – 0
    • Summary of outbreaks
      • Total outbreaks: 5
        • Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
          • Birds – 890015 - 75011 ** – 40010 – 850005 – 0
        • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
          • Birds – ** - 4.50% – ** - 100.00%
          • *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
        • Contact with wild species
    • Epidemiological comments
      • Two new outbreaks were identified in Jalisco:
        • one in a commercial layer farm in Tepatitlán de Morelos and
        • another in a backyard farm in the municipality of San Diego de Alejandría.
      • In Guanajuato, two outbreaks were detected:
        • one in a heavy breeder flock in Dolores Hidalgo and
        • another in a fattening farm in the municipality of San José Iturbide.
      • Moreover, a new outbreak was identified in a commercial layer farm in the municipality of Palmar de Bravo, Puebla.
      • It was confirmed by the National Reference Laboratory using virus isolation on 6 May 2013.
      • On 7 May, the farm was depopulated and control measures including cleaning and disinfection of facilities and equipment as well as sampling around the outbreak within a 10 km radius were launched, in addition to epidemiological surveillance at State level.
    • Control measures
      • Measures applied
        • Quarantine
        • Movement control inside the country
        • Screening
        • Zoning ù
        • Vaccination in response to the outbreak (s): Administrative division – Species - Total Vaccinated – Details
          • GUANAJUATO – Birds – 5512080 - Breeder and layer commercial farms
        • Disinfection of infected premises/establishment(s)
        • No treatment of affected animals
      • Measures to be applied
        • Stamping out
    • Future Reporting
      • The event is continuing. Weekly follow-up reports will be submitted.
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