Highly pathogenic avian influenza,
Mexico
Information received on 28/02/2013 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. 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)
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)
Follow-up report No. 11 (19/05/2014)
New outbreaks (11)
Outbreak 1 Dolores Hidalgo 1, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 16/02/2013
Outbreak status Resolved (17/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 35000 2000 1000 34000 0
Outbreak 2 Dolores Hidalgo 2, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 16/02/2013
Outbreak status Resolved (17/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 26171 187 187 25984 0
Outbreak 3 Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 17/02/2013
Outbreak status Resolved (18/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 71292 522 347 70945 0
Outbreak 4 San Miguel de Allende, San Miguel de Allende, GUANAJUATO
Date of start of the outbreak 18/02/2013
Outbreak status Resolved (19/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 40000 26665 21700 18300 0
Outbreak 5 Juventino Rosas 1, Juventino Rosas, GUANAJUATO
Date of start of the outbreak 19/02/2013
Outbreak status Resolved (20/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 107212 1000 800 106412 0
Outbreak 6 Juventino Rosas 2, Juventino Rosas, GUANAJUATO
Date of start of the outbreak 19/02/2013
Outbreak status Resolved (20/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 100326 1000 800 99526 0
Outbreak 7 León, León, GUANAJUATO
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 112501 25000 20335 31585 0
Outbreak 8 San Luis de La Paz, San Luis de La Paz, GUANAJUATO
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 189000 1000 571 188429 0
Outbreak 9 San Miguel de Allende, San Miguel de Allende, GUANAJUATO
Date of start of the outbreak 21/02/2013
Outbreak status Resolved (21/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 182354 2500 2168 180186 0
Outbreak 10 Celaya, Celaya, GUANAJUATO
Date of start of the outbreak 23/02/2013
Outbreak status Resolved (25/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 110162 84 84 110078 0
Outbreak 11 Dolores Hidalgo, Dolores Hidalgo, GUANAJUATO
Date of start of the outbreak 23/02/2013
Outbreak status Resolved (24/02/2013)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 40000 2200 1673 38327 0
Summary of outbreaks Total outbreaks: 11
Total animals affected
Species Susceptible Cases Deaths Destroyed Slaughtered
Birds 1014018 62158 49665 903772 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% 94.03%
*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.
Map of outbreak locations