Rabbit haemorrhagic disease,
Mexico
Information received on 29/07/2020 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 Follow-up report No. 12
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 29/07/2020
Date submitted to OIE 29/07/2020
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 RHDV2
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)
Follow-up report No. 5 (29/05/2020)
Follow-up report No. 6 (09/06/2020)
Follow-up report No. 7 (17/06/2020)
Follow-up report No. 8 (24/06/2020)
Follow-up report No. 9 (01/07/2020)
Follow-up report No. 10 (14/07/2020)
Follow-up report No. 11 (22/07/2020)
Follow-up report No. 12 (29/07/2020)
Follow-up report No. 13 (04/08/2020)
Follow-up report No. 14 (18/08/2020)
Follow-up report No. 15 (26/08/2020)
Follow-up report No. 16 (18/09/2020)
New outbreaks (3)
Outbreak 1 Mazapil, Zacatecas
Date of start of the outbreak 18/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 30 28 28 2 0
Affected population A backyard with 30 rabbits for meat production, detected by notification due to the presence of clinical signs suggesting the disease (severe respiratory symptoms, bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 2 Comondú, Baja California Sur
Date of start of the outbreak 21/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 100 49 49 51 0
Affected population A high tech unit with 100 rabbits for breeding , detected by notification due to the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge as well as sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Outbreak 3 Ensenada, Baja California
Date of start of the outbreak 21/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 24 22 22 2 0
Affected population A backyard with 24 rabbits for meat production, detected by notification due to the presence of clinical signs suggesting the disease (final squeaking and sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Summary of outbreaks Total outbreaks: 3
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 154 99 99 55 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 64.29% 64.29% 100.00% 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 Following epidemiological tracing and increased notification, affected backyards were identified: one in Baja California and another in Zacatecas. In addition one affected high tech unit in Baja California Sur was reported. The backyards/production units have been depopulated and cleaning and desinfection are on-going. Active surveillance continues in these States for new cases. It was recommended that producers in the area immediately inform official veterinary personnel of the presence of typical signs of rabbit haemorraghic disease or of any wild animals found dead in the area, as well as avoid movements of rabbits.
Control measures
Measures applied
  • Surveillance within containment and/or protection zone
  • Quarantine
  • Official disposal of carcasses, by-products and waste
  • Stamping out
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • Surveillance outside containment and/or protection zone
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations