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

[Giuseppe]

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


Highly pathogenic avian influenza H7N3, Mexico


Information received on 08/05/2013 from Dr Joaqu?n Braulio Delgadillo ?lvarez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA) Secretar?a de Agricultura, Ganader?a, Desarrollo Rural, Pesca y Alimentaci?n, Ministerio de Agricultura, Ganader?a, Desarrollo rural, Pesca y Alimentaci?n, 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 Alejandr?a, San Diego de Alejandr?a, 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 Jos? Iturbide, San Jos? 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 - Tepatitl?n de Morelos, Tepatitl?n 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 Tepatitl?n de Morelos and
    • another in a backyard farm in the municipality of San Diego de Alejandr?a.
  • 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 Jos? 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 ?
    • 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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