Highly pathogenic avian influenza H7N3, Mexico (OIE, February 28 2013): 11 New Poultry Outbreaks, Guanajuato

[Giuseppe]

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


Highly pathogenic avian influenza, Mexico


Information received on 28/02/2013 from Dr Joaquνn Braulio Delgadillo Αlvarez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA) Secretarνa de Agricultura, Ganaderνa, Desarrollo Rural, Pesca y Alimentaciσn, Ministerio de Agricultura, Ganaderνa, Desarrollo rural, Pesca y Alimentaciσn, Mexico, Mexico

• Summary
  • Report type Follow-up report No. 3
  • Date of start of the event 03/01/2013
  • Date of pre-confirmation of the event 07/01/2013
  • Report date 28/02/2013
  • Date submitted to OIE 28/02/2013
  • 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), Laboratory (advanced)
  • 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)
• New outbreaks (11)
  • Outbreak 1 - Dolores Hidalgo 1, Dolores Hidalgo, GUANAJUATO
    • Date of start of the outbreak 16/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 35000 – 2000 – 1000 – 0 – 0
  • Outbreak 2 - Dolores Hidalgo 2, Dolores Hidalgo, GUANAJUATO
    • Date of start of the outbreak 16/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 26171 – 187 – 187 – 0 – 0
  • Outbreak 3 - Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
    • Date of start of the outbreak 17/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 71292 – 522 – 347 – 0 – 0
  • Outbreak 4 - San Miguel de Allende, San Miguel de Allende, GUANAJUATO
    • Date of start of the outbreak 18/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 40000 – 26665 – 21700 – 0 – 0
  • Outbreak 5 - Juventino Rosas 1, Juventino Rosas, GUANAJUATO
    • Date of start of the outbreak 19/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 107212 – 1000 – 800 – 0 – 0
  • Outbreak 6 - Juventino Rosas 2, Juventino Rosas, GUANAJUATO
    • Date of start of the outbreak 19/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 100326 – 1000 – 800 – 0 – 0
  • Outbreak 7 - San Luis de La Paz, San Luis de La Paz, GUANAJUATO
    • Date of start of the outbreak 20/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 189000 – 1000 – 571 – 0 – 0
  • Outbreak 8 - Leσn, Leσn, GUANAJUATO
    • Date of start of the outbreak 20/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 112501 – 25000 – 20335 – 0 – 0
  • Outbreak 9 - San Miguel de Allende, San Miguel de Allende, GUANAJUATO
    • Date of start of the outbreak 21/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 182354 – 2500 – 2168 – 0 – 0
  • Outbreak 10 - Celaya, Celaya, GUANAJUATO
    • Date of start of the outbreak 23/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 110162 – 84 – 84 – 0 – 0
  • Outbreak 11 - Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
    • Date of start of the outbreak 23/02/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 40000 – 2200 – 1673 – 0 – 0
• Summary of outbreaks
  • Total outbreaks: 11
    • Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds – 1014018 – 62158 – 49665 – 0 – 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds - 6.13% - 4.90% - 79.90% - 4.90%
      • *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
  • Following the epidemiological investigation on the event occurred in Guanajuato, the spread of highly pathogenic avian influenza virus was identified through surveillance in eleven production units (5 commercial layer farms, one broiler farm and 5 breeder farms) with a total affected population of 1,014,018 birds, of which 62,158 sick and 49,665 dead.
  • Simultaneously, depopulation activities have begun in the affected farms.
• Control measures
  • Measures applied
    • Stamping out
    • Quarantine
    • Movement control inside the country
    • Screening
    • Zoning
    • 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
    • No other measures
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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