Rabbit haemorrhagic disease,
Mexico
Information received on 04/08/2020 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 Follow-up report No. 13
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 04/08/2020
Date submitted to OIE 04/08/2020
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 (8)
Outbreak 1 Nuevo Ideal, Durango
Date of start of the outbreak 20/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 17 17 3 14 0
Affected population A backyard with 17 rabbits, these are pet animals, detected by notification due to the presence of clinical signs suggesting the disease (severe respiratory symptoms, excitation, incoordination and final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 2 Durango, Durango
Date of start of the outbreak 25/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 10 4 4 6 0
Affected population A backyard with 10 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, sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 3 Canatlán, Durango
Date of start of the outbreak 25/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 20 2 2 18 0
Affected population An animal food store, with 20 rabbits, these are pet animals, 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 haemagglutination and RT-PCR diagnostic tests.
Outbreak 4 Rio Grande, Zacatecas
Date of start of the outbreak 25/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 62 20 20 42 0
Affected population A backyard with 62 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, excitation, incoordination and sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
Outbreak 5 Cuauhtémoc, Chihuahua
Date of start of the outbreak 26/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 4 3 1 3 0
Affected population A backyard with 4 rabbits, these are pet animals, detected by notification due to the presence of clinical signs suggesting the disease (excitation, incoordination, final squeaking and sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 6 Canatlán, Durango
Date of start of the outbreak 27/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 110 110 80 30 0
Affected population A backyard with 110 animals for meat production, detected by notification due to the presence of clinical signs suggesting the disease (severe respiratory symptoms, excitation, incoordination and sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 7 Santa Clara, Durango
Date of start of the outbreak 27/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 25 25 15 10 0
Affected population A backyard with 25 animals for meat production, detected by notification due to the presence of clinical signs suggesting the disease (excitation, incoordination, final squeaking and sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 8 Rio Grande, Zacatecas
Date of start of the outbreak 29/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 28 10 10 18 0
Affected population A backyard with 28 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, sudden death). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Summary of outbreaks Total outbreaks: 8
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 276 191 135 141 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 69.20% 48.91% 70.68% 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, four affected backyards were identified in Durango as well as an animal food store ; two backyards in Zacatecas and another backyard in Chihuahua were reported affected too. 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