Fowl typhoid,
Mexico
Information received on 06/08/2020 from Dr. Gay Gutiérrez Juan, 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 Immediate notification
Date of start of the event 23/07/2020
Date of confirmation of the event 04/08/2020
Report date 06/08/2020
Date submitted to OIE 06/08/2020
Date event resolved 18/09/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 11/2015
Manifestation of disease Clinical disease
Causal agent Salmonella gallinarum
Nature of diagnosis Clinical, Laboratory (basic), Laboratory (advanced), Necropsy
This event pertains to a defined zone within the country
Related reports Immediate notification (06/08/2020)
Follow-up report No. 1 (02/10/2020)
Follow-up report No. 2 (15/12/2020)
New outbreaks (1)
Outbreak 1 Zempoala, Hidalgo
Date of start of the outbreak 23/07/2020
Outbreak status Resolved (10/09/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 500 150 350 0
Affected population This is a rural farm with 500 laying birds showing clinical signs compatible with the disease (diarrhea, lethargic birds with ruffled feathers, prostration and death). Organ samples were taken and tested positive for Salmonella gallinarum by RT-PCR, bacterial isolation and biochemical typing.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Birds 500 ** 150 350 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Birds ** 30.00% ** 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
  • Unknown or inconclusive
Epidemiological comments Derivado de la notificación, se ha localizado un predio rural afectado en Hidalgo. El predio rural está en proceso de despoblación. Se realiza la investigación epidemiológica (rastreo) para identificar el origen del evento sanitario. Se recomendó a los productores de la zona notificar de manera inmediata al personal veterinario oficial, la presencia de signos sugerentes a la enfermedad y la mortalidad de aves de corral.
Control measures
Measures applied
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Surveillance outside containment and/or protection zone
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
Diagnostic test results
Laboratory name and type Species Test Test date Result
CENASA (National laboratory) Birds bacteriological examination 04/08/2020 Positive
Laboratorio de bioseguridad nivel 3 del SENASICA (National laboratory) Birds real-time PCR 27/07/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations