Rabbit haemorrhagic disease,
Mexico
Information received on 01/07/2020 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. 9
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 01/07/2020
Date submitted to OIE 01/07/2020
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)
New outbreaks (10)
Outbreak 1 Cuauhtémoc, Chihuahua
Date of start of the outbreak 12/06/2020
Outbreak status Resolved (01/07/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 26 26 26 0 0
Affected population A backyard with 26 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory symptoms and final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 2 Lerdo, Durango
Date of start of the outbreak 13/06/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 10 6 4 6 0
Affected population A backyard with 10 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 3 Mazapil, Zacatecas
Date of start of the outbreak 14/06/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 25 24 24 1 0
Affected population A backyard with 25 animals for meat production, detected by notification due to sudden mortality in animals and 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 4 Mazapil, Zacatecas
Date of start of the outbreak 14/06/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 50 49 49 1 0
Affected population A backyard with 50 rabbits for meat production, detected by notification due to sudden mortality in animals and 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 RT-PCR diagnostic test.
Outbreak 5 Gómez Palacio, Durango
Date of start of the outbreak 15/06/2020
Outbreak status Resolved (07/07/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 15 15 4 11 0
Affected population A backyard with 15 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory symptoms, excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Outbreak 6 Comondú, Baja California Sur
Date of start of the outbreak 16/06/2020
Outbreak status Resolved (06/07/2020)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 43 3 3 40 0
Affected population A Management Unit for Widlife Conservation with 43 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (haemorrhagic rhinitis, bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Outbreak 7 Tecate, Baja California
Date of start of the outbreak 17/06/2020
Outbreak status Resolved (17/06/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 200 95 75 125 0
Affected population A backyard with 200 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation, incoordination and finjal squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Outbreak 8 Ensenada, Baja California
Date of start of the outbreak 18/06/2020
Outbreak status Resolved (04/07/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 260 120 120 140 0
Affected population A backyard with 260 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Outbreak 9 Lerdo, Durango
Date of start of the outbreak 20/06/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 280 100 70 210 0
Affected population A high tech farm with 280 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 10 Tecate, Baja California
Date of start of the outbreak 22/06/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 14 1 1 13 0
Affected population A backyard with 14 animals for meat production, detected by notification due to sudden mortality in animals. Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Summary of outbreaks Total outbreaks: 10
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 923 439 376 547 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 47.56% 40.74% 85.65% 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: three in Baja California, one in Baja California Sur, one in Chihuahua, three in Durango and two in Zacatecas. The backyards 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