Rabbit haemorrhagic disease,
Mexico
Information received on 14/10/2020 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. 19
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 14/10/2020
Date submitted to OIE 14/10/2020
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)
Follow-up report No. 17 (25/09/2020)
Follow-up report No. 18 (05/10/2020)
Follow-up report No. 19 (14/10/2020)
Follow-up report No. 20 (28/10/2020)
Follow-up report No. 21 (17/11/2020)
New outbreaks (4)
Outbreak 1 Tijuana, Baja California
Date of start of the outbreak 27/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Zoo
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 50 25 17 33 0
Affected population A zoo with 50 rabbits, these are pet animals, detected by notification due to the presence of clinical signs (bloody and foamy nasal discharge, excitation, incoordination) and sudden death of the animals. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 2 San Francisco de los Romo, Aguascalientes
Date of start of the outbreak 28/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 45 7 7 38 0
Affected population A backyard with 45 rabbits for meat production, detected by notification due to the presence of clinical signs (bloody and foamy nasal discharge) and sudden death of the animals. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 3 Durango, Durango
Date of start of the outbreak 28/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 27 8 8 19 0
Affected population A high tech unit with 27 rabbits, these are pet animals, detected by notification due to the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge) and sudden death of the animals. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 4 Durango, Durango
Date of start of the outbreak 06/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 3 3 1 2 0
Affected population A backyard with 3 rabbits, these are pet animals, 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 of the animals. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Summary of outbreaks Total outbreaks: 4
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 125 43 33 92 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 34.40% 26.40% 76.74% 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, one affected backyard was identified in Aguascalientes as well as a zoo in Baja California. In addition one high tech unit and a backyard both affected were reported in Durango. The premises 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
  • 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
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations