Highly pathogenic avian influenza,
Mexico
Information received on 23/03/2013 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. 4
Date of start of the event 03/01/2013
Date of pre-confirmation of the event 07/01/2013
Report date 23/03/2013
Date submitted to OIE 23/03/2013
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)
Follow-up report No. 6 (23/04/2013)
Follow-up report No. 7 (07/05/2013)
Follow-up report No. 8 (12/06/2013)
Follow-up report No. 9 (12/08/2013)
Follow-up report No. 10 (31/08/2013)
New outbreaks (13)
Outbreak 1 Tepatitán de Morelos, Tepatitlán de Morelos, JALISCO
Date of start of the outbreak 12/02/2013
Outbreak status Resolved (14/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 178029 3000 3000 175029 0
Affected population Four commercial flocks of layers
Outbreak 2 Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 15/02/2013
Outbreak status Resolved (16/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 38739 6081 5125 0 0
Outbreak 3 Lagos de Moreno, Lagos de Moreno, JALISCO
Date of start of the outbreak 19/02/2013
Outbreak status Resolved (21/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 1752391 396200 388499 1363892 0
Affected population 15 flocks of broilers
Outbreak 4 Lagos de Moreno, Lagos de Moreno, JALISCO
Date of start of the outbreak 20/02/2013
Outbreak status Resolved (21/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 2000 100 100 1900 0
Affected population A commercial flock of layer Japanese quails
Outbreak 5 Encarnación de Díaz, Encarnación de Díaz, JALISCO
Date of start of the outbreak 20/02/2013
Outbreak status Resolved (21/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 374699 39644 7100 367599 0
Affected population Two flocks of broilers
Outbreak 6 Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 25/02/2013
Outbreak status Resolved (26/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 34317 16699 329 33988 0
Outbreak 7 Tepatitlán de Morelos, Tepatitlán de Morelos, JALISCO
Date of start of the outbreak 25/02/2013
Outbreak status Resolved (26/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 10 3 2 8 0
Affected population Backyard poultry
Outbreak 8 Juventino Rosas, Juventino Rosas, GUANAJUATO
Date of start of the outbreak 25/02/2013
Outbreak status Resolved (26/02/2013)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 43 3 3 40 0
Outbreak 9 Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 25/02/2013
Outbreak status Resolved (26/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 7452 2100 1405 6047 0
Outbreak 10 San Miguel de Allende, San Miguel de Allende, GUANAJUATO
Date of start of the outbreak 26/02/2013
Outbreak status Resolved (27/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 42719 9464 944 41775 0
Outbreak 11 Comonfort, Comonfort, GUANAJUATO
Date of start of the outbreak 27/02/2013
Outbreak status Resolved (28/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 22900 0 22900 0
Outbreak 12 Unión de San Antonio, Unión de San Antonio, JALISCO
Date of start of the outbreak 27/02/2013
Outbreak status Resolved (28/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 11 6 0 11 0
Affected population Backyard poultry
Outbreak 13 San Miguel de Allende, San Miguel de Allende, GUANAJUATO
Date of start of the outbreak 28/02/2013
Outbreak status Resolved (01/03/2013)
Epidemiological unit Village
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 70 6 2 68 0
Summary of outbreaks Total outbreaks: 13
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 2453380 473306 ** 406509 2013257 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 16.57% ** 98.63%
*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 Following the epidemiological investigation on the event occurred in Guanajuato, 7 outbreaks due to highly pathogenic avian influenza virus were identified (5 heavy breeder farms and 2 backyards) with a total affected population of 146,240 birds. These outbreaks were located in the municipalities of Dolores Hidalgo (4), Juventino Rosas (1) and San Miguel de Allende (2). In Jalisco, 2 outbreaks in broiler farms, one in Lagos de Moreno (15 flocks) and another in Encarnación de Díaz (2 flocks) were identified. In commercial layer farms, one outbreak was identified in Tepatitlán de Morelos (4 flocks), one in quails (Lagos de Moreno) and 2 in backyards (Tepatitlán de Morelos and Unión de San Antonio). The affected population is 2,307,140 birds. Simultaneously, depopulation activities have begun in the affected farms and preventive vaccination is still on-going in high risk birds. From January to 15 March 2013, 44.6 million doses were applied.
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.
Map of outbreak locations