Rabbit haemorrhagic disease,
Mexico
Information received on 16/05/2020 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. 3
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 15/05/2020
Date submitted to OIE 16/05/2020
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)
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 (11)
Outbreak 1 La Cruz, Chihuahua
Date of start of the outbreak 23/04/2020
Outbreak status Resolved (01/05/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 32 13 13 19 0
Affected population A backyard with 32 adult animals for meat production detected by notification due to clinical signs suggesting the disease (incoordination and terminal squeal). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR.
Outbreak 2 Cajeme, Sonora
Date of start of the outbreak 23/04/2020
Outbreak status Resolved (25/04/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 11 8 8 3 0
Affected population A backyard with 11 pet rabbits detected by notification due to sudden deaths and clinical signs suggesting the disease (serous-mucopurulent conjunctivitis). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR.
Outbreak 3 Caborca, Sonora
Date of start of the outbreak 27/04/2020
Outbreak status Resolved (27/04/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 48 47 47 1 0
Affected population A backyard with 48 pet rabbits detected by notification due to sudden deaths and clinical signs suggesting the disease (dyspnea). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination, haemagglutination inhibition and RT-PCR.
Outbreak 4 Aldama, Chihuahua
Date of start of the outbreak 27/04/2020
Outbreak status Resolved (30/04/2020)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Black-tailed Jackrabbit:Lepus californicus(Leporidae) 1 1 0 0
Affected population A wild rabbit found dead and notified to the authorities. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR.
Outbreak 5 Chihuahua, Chihuahua
Date of start of the outbreak 27/04/2020
Outbreak status Resolved (04/05/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 6 1 1 5 0
Affected population A backyard with six pet rabbits detected by notification due to sudden deaths. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination, haemagglutination inhibition and RT-PCR.
Outbreak 6 Hermosillo, Sonora
Date of start of the outbreak 28/04/2020
Outbreak status Resolved (07/05/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 100 12 12 88 0
Affected population A backyard with 100 pet rabbits detected by notification due to sudden deaths and clinical signs suggesting the disease (dyspnea). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR.
Outbreak 7 Moctezuma, Sonora
Date of start of the outbreak 30/04/2020
Outbreak status Resolved (07/05/2020)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Black-tailed Jackrabbit:Lepus californicus(Leporidae) 1 1 0 0
Affected population A wild rabbit found dead and notified to the authorities. Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR.
Outbreak 8 Hermosillo, Sonora
Date of start of the outbreak 01/05/2020
Outbreak status Resolved (08/05/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 60 16 16 44 0
Affected population An ecological center belonging to the State with 60 pet rabbits detected by notification due to sudden deaths and clinical signs suggesting the disease (dyspnea). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination, haemagglutination inhibition and RT-PCR.
Outbreak 9 Delicias, Chihuahua
Date of start of the outbreak 03/05/2020
Outbreak status Resolved (03/05/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 1 1 1 0 0
Affected population A backyard with one pet rabbit detected by notification due to its sudden death and clinical signs suggesting the disease (hemorrhagic rhinitis). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR.
Outbreak 10 Mulege, Baja California Sur
Date of start of the outbreak 05/05/2020
Outbreak status Resolved (05/05/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 50 37 37 13 0
Affected population A backyard with 50 animals for meat production detected by notification due to sudden deaths and clinical signs suggesting the disease (frothy and bloody nasal discharge; incoordination and terminal squeal). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination, haemagglutination inhibition and RT-PCR.
Outbreak 11 Hermosillo, Sonora
Date of start of the outbreak 05/05/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 200 130 130 70 0
Affected population A backyard with 200 pet rabbits detected by notification due to sudden deaths and clinical signs suggesting the disease. Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR.
Summary of outbreaks Total outbreaks: 11
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 508 265 265 243 0
Black-tailed Jackrabbit:Lepus californicus(Leporidae) 2 2 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 52.17% 52.17% 100.00% 100.00%
Black-tailed Jackrabbit:Lepus californicus(Leporidae) ** ** 100.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Based on epidemiological investigation and increased requests for notification, several affected farms and dead wild rabbits were identified in the States of Chihuahua and Sonora as well as the first outbreak in the State of Baja California Sur. The affected premises have been depopulated and are being cleaned and disinfected. Active surveillance continues in the affected States in search of possible new cases.
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