Porcine epidemic diarrhea virus,
Mexico
Information received on 21/05/2014 from MVZ 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, México, Mexico
Summary
Report type Immediate notification
Date of start of the event 30/07/2013
Date of confirmation of the event 08/08/2013
Report date 21/05/2014
Date submitted to OIE 21/05/2014
Date event resolved 11/02/2016
Reason for notification Emerging disease
Morbidity 3 (scale 0 to 5)
Mortality 2 (scale 0 to 5)
Zoonotic impact No
Causal agent Porcine epidemic diarrhea virus
Serotype Other
Related reports Immediate notification (21/05/2014)
Follow-up report No. 1 (11/02/2016)
New outbreaks (83)
Outbreak cluster 1 Aguascalientes, Baja California, Colima, Federal District, Guanajuato, Guerrero, Jalisco, State of Mexico, Michoacán, Morelos, Nuevo León, Puebla, Querétaro, Sinaloa, Sonora, Tlaxcala and Veracruz, Mexico (83 outbreaks)
Date of start of the outbreak 30/07/2013
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine
Summary of outbreaks Total outbreaks: 83
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Swine **
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Swine ** ** ** **
*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
  • Legal movement of animals
Epidemiological comments Following notification of an unusual mortality, mainly in piglets, in the central-western part of the country, with clinical evidence suggestive of porcine epidemic diarrhea virus, the official Veterinary Services in coordination with farmers began a diagnosis of the situation of this disease that included epidemiological sampling in farrow-to-finish farms, fattening farms, breeding farms, backyard farms and slaughterhouses with clinical evidence. During the epidemiological investigation, 2,309 samples were tested with RRT-PCR in 19 federal entities between August 2013 and May 2014. Out of the total number of samples, only 30% were positive for porcine epidemic diarrhea and 70% were negative, which suggests that there may be some other etiological agent involved in this event, being a multicausal process. It should be noted that, to date, it has not been possible to isolate the virus and that the States where positive cases were identified by RRT-PCR are: Aguascalientes, Baja California, Colima, Federal District, Guanajuato, Guerrero, Jalisco, State of Mexico, Michoacán, Morelos, Nuevo León, Puebla, Querétaro, Sinaloa, Sonora, Tlaxcala and Veracruz. Samples from the States of Yucatán and of Oaxaca were negative for the disease.
Control measures
Measures applied
  • Modified stamping out
  • Disinfection / Disinfestation
  • Screening
  • Vaccination permitted (if a vaccine exists)
  • Treatment of affected animals (symptomatic treatment)
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
Biosecurity Laboratory Level 3, SENASICA (National laboratory) Swine real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 08/08/2013 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations