Rabbit haemorrhagic disease,
Mexico
Information received on 10/04/2020 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 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 09/04/2020
Date submitted to OIE 10/04/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 1991
Manifestation of disease Clinical disease
Causal agent Rabbit haemorrhagic disease virus
Serotype Not typed
Nature of diagnosis Clinical, Laboratory (advanced)
This event pertains to a defined zone within the country
Related reports Immediate notification (09/04/2020)
Follow-up report No. 1 (22/04/2020)
Follow-up report No. 2 (04/05/2020)
Follow-up report No. 3 (15/05/2020)
Follow-up report No. 4 (25/05/2020)
New outbreaks (1)
Outbreak 1 Nuevo Casa Grandes, Chihuahua
Date of start of the outbreak 03/04/2020
Outbreak status Resolved (09/04/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 30 13 11 19 0
Affected population A backyard with 30 adult animals for reproduction/breeding detected following sudden deaths and clinical signs suggesting the disease (dyspnea, nasal bleeding).
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 30 13 11 19 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 43.33% 36.67% 84.62% 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 The affected backyard has been depopulated and cleaning and disinfection are on-going. Following the epidemiological investigation, two in-contact premises were identified, but no evidence of the disease was found; however, as a precautionary measure, they will be depopulated. The zone around the outbreak has been expanded in order to further detect other cases. It is important to emphasize that this is not a rabbit breeding zone at national level and the population is very limited.
Control measures
Measures applied
  • Disinfection
  • Stamping out
  • Official disposal of carcasses, by-products and waste
  • Quarantine
  • Surveillance within containment and/or protection zone
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Surveillance outside containment and/or protection zone
Diagnostic test results
Laboratory name and type Species Test Test date Result
SENASICA Biosafety Laboratory Level 3 (National laboratory) Rabbits haemagglutination (HA) test 08/04/2020 Positive
SENASICA Biosafety Laboratory Level 3 (National laboratory) Rabbits reverse transcription - polymerase chain reaction (RT-PCR) 08/04/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations