Highly pathogenic avian influenza H7N3, Mexico (OIE, January 17 2013): 2 New Poultry Outbreaks, Jalisco

[Giuseppe]

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


Highly pathogenic avian influenza, Mexico


Information received on 16/01/2013 from Dr Hugo Fragoso S?nchez, 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 (SAGARPA), Mexico, Mexico

• Summary
  • Report type Immediate notification
  • Date of start of the event 12/01/2013
  • Date of pre-confirmation of the event 12/01/2013
  • Report date 16/01/2013
  • Date submitted to OIE 17/01/2013
  • 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
• New outbreaks
  • Summary of outbreaks
    • Total outbreaks: 2
    • Outbreak Location - JALISCO ( Foco 2, Encarnaci?n de D?az, Encarnaci?n de D?az Foco 1, Encarnaci?n de D?az, Encarnaci?n de D?az )
      • Total animals affected: Species - Susceptible - Cases - Deaths - Destroyed - Slaughtered
        • Birds - 397513 ? 20068 - 18009 - 0 - 0
  • Outbreak statistics: Species - Apparent morbidity rate - Apparent mortality rate - Apparent case fatality rate - Proportion susceptible animals lost*
    • Birds - 5.05% - 4.53% - 89.74% - 4.53%
    • * 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
  • A high mortality was reported on 12 January in two layer farms, which were immediately inspected by official staff from SENASICA in the Municipality of Encarnaci?n de D?az, State of Jalisco.
  • The first outbreak has a population of 191,771 birds aged 72 weeks, of which 10,010 sick and 9,077 dead.
  • The second outbreak has population of 205,742 birds aged 65 weeks, of which 10,058 sick and 8,932 dead.
  • Both outbreaks were detected through notification made by the veterinarians in charge of these farms.
  • The disease evolved hyperacutely with clinical signs as conjunctivitis, edema, cyanosis, palpebral, comb and chin swelling and sudden death. Both farms are being depopulated.
  • Active and passive surveillance continues at national level and epidemiological investigation will go on in order to identify the source of the infection.
• Control measures
  • Measures applied
    • Quarantine
    • Movement control inside the country
    • Screening
    • Zoning
    • Vaccination prohibited
    • No treatment of affected animals
  • Measures to be applied
    • Stamping out
    • Disinfection of infected premises/establishment(s)
• Future Reporting
  • The event is continuing. Weekly follow-up reports will be submitted.

-
------