Highly pathogenic avian influenza,
Mexico
Information received on 09/07/2019 from Dr. Juan Gay Gutiérrez, Director General de Salud Animal, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria (SENASICA), Secretaría de Agricultura y Desarrollo Rural (SADER), Ciudad de Mexico, Mexico
Summary
Report type Follow-up report No. 6
Date of start of the event 06/03/2019
Date of confirmation of the event 10/03/2019
Report date 08/07/2019
Date submitted to OIE 09/07/2019
Reason for notification Recurrence of a listed disease
Date of previous occurrence 18/04/2018
Manifestation of disease Clinical disease
Causal agent Highly pathogenic avian influenza virus
Serotype H7N3
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (01/04/2019)
Follow-up report No. 1 (16/04/2019)
Follow-up report No. 2 (26/04/2019)
Follow-up report No. 3 (17/05/2019)
Follow-up report No. 4 (04/06/2019)
Follow-up report No. 5 (19/06/2019)
Follow-up report No. 6 (08/07/2019)
New outbreaks (3)
Outbreak 1 Tasquillo, Hidalgo
Date of start of the outbreak 06/06/2019
Outbreak status Resolved (19/06/2019)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1000 1000 1000 0 0
Affected population Backyard farm with 1,000 birds detected following notification of high mortality and clinical signs suggesting highly pathogenic avian influenza (cyanosis, edema and swelling on red comb and wattles and sudden death).
Outbreak 2 Tlajomulco de Zuñiga, Jalisco
Date of start of the outbreak 11/06/2019
Outbreak status Resolved (13/06/2019)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 210 10 10 200 0
Affected population Backyard farm with 210 birds detected following notification of high mortality and clinical signs suggesting highly pathogenic avian influenza (cyanosis, edema and swelling on red comb and wattles and sudden death).
Outbreak 3 Santa Cruz de Juventino Rosas, Guanajuato
Date of start of the outbreak 19/06/2019
Outbreak status Resolved (21/06/2019)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 50 30 25 25 0
Affected population Backyard farm with 50 birds detected following notification of high mortality and clinical signs suggesting highly pathogenic avian influenza (cyanosis, edema and swelling on red comb and wattles and sudden death).
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 1260 1040 1035 225 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds 82.54% 82.14% 99.52% 100.00%
*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 Three backyards in the States of Hidalgo, Jalisco and Guanajuato, in which virus isolation has been carried out, have been notified. For the outbreak in Hidalgo, a result of 2.51 was obtained via an IVPI test. In all outbreaks, a ban on the entry and exit of birds was enforced, a definitive quarantine was established, all birds were slaughtered, and all carcasses, products and waste were disposed of, and the facilities were cleaned and disinfected. The States of Hidalgo, Jalisco and Guanajuato have a low prevalence of disease and the H7N3 avian influenza virus vaccine is applied, with prior authorization from SENASICA.
Control measures
Measures applied
  • Movement control inside the country
  • Surveillance outside containment and/or protection zone
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
  • Slaughter
  • Ante and post-mortem inspections
  • Vaccination permitted (if a vaccine exists)
  • 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