Highly pathogenic avian influenza H7N3, Mexico (OIE, April 18 2013): 11 New Poultry Outbreaks

[Giuseppe]

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


Highly pathogenic avian influenza H7N3, Mexico


Information received on 17/04/2013 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. 5
  • Date of start of the event 03/01/2013
  • Date of pre-confirmation of the event 07/01/2013
  • Report date 17/04/2013
  • Date submitted to OIE 17/04/2013
  • 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)
    • Follow-up report No. 4 (23/03/2013)
    • Follow-up report No. 5 (17/04/2013)
• New outbreaks (11)
  • Outbreak 1 - Ixtacuixtla de Mariano Matamoros, Ixtacuixtla de Mariano Matamoros, TLAXCALA
    • Date of start of the outbreak 04/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Village
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 34 – 5 – 2 – 0 – 0
  • Outbreak 2 - San Josι Iturbide, San Josι Iturbide, GUANAJUATO
    • Date of start of the outbreak 05/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 209167 - … - 0 – 0 – 0
  • Outbreak 3 - San Luis de la Paz, San Luis de la Paz, GUANAJUATO
    • Date of start of the outbreak 06/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 118114 - … – 0 – 0 – 0
  • Outbreak 4 - Tepatitlαn de Morelos, Tepatitlαn de Morelos, JALISCO
    • Date of start of the outbreak 13/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 2800 - … – 0 – 0 – 0
  • Outbreak 5 - Teocuitatlan de Corona, Teocuitatlan de Corona, JALISCO
    • Date of start of the outbreak 14/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 20500 – 8000 – 0 – 0 – 0
  • Outbreak 6 - Lagos de Moreno, Lagos de Moreno, JALISCO
    • Date of start of the outbreak 14/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 10000 – 500 – 500 – 0 – 0
  • Outbreak 7 - Comonfort 1, Comonfort, GUANAJUATO
    • Date of start of the outbreak 23/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 23760 - … – 0 – 0 – 0
  • Outbreak 8 - Comonfort 2, Comonfort, GUANAJUATO
    • Date of start of the outbreak 23/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 25269 - … - 0 – 0 – 0
  • Outbreak 9 - Acatic, Acatic, JALISCO
    • Date of start of the outbreak 25/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 94500 - … – 0 – 0 – 0
  • Outbreak 10 - Acatic, Acatic, JALISCO
    • Date of start of the outbreak 26/03/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 3700 - … – 0 – 0 – 0
  • Outbreak 11 - Lagos de Moreno, Lagos de Moreno, JALISCO
    • Date of start of the outbreak 04/04/2013
    • Outbreak status Continuing (or date resolved not provided)
    • Epidemiological unit Farm
    • Affected animals: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 156282 - … – 0 – 0 – 0
• Summary of outbreaks
  • Total outbreaks: 11
    • Total animals affected: Species – Susceptible – Cases – Deaths – Destroyed – Slaughtered
      • Birds - 664126 - 8505 ** – 502 – 0 – 0
    • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
      • Birds – ** - 0.08% – ** - 0.08%
      • *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
  • There are 11 new outbreaks: six in Jalisco, four in Guanajuato and one in Tlaxcala.
  • Among these outbreaks, six occur in commercial layer farms (four in Jalisco and two in Guanajuato), three in heavy breeder farms (one in Jalisco and two in Guanajuato), one in broilers (Jalisco) and one in backyard poultry (Tlaxcala); an epidemiological investigation is on-going in this last outbreak.
  • Several outbreaks were identified from virus isolated in previously immunized flocks, which did not show clinical signs nor drop in production.
• Control measures
  • Measures applied
    • 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
    • Stamping out
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

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