Rabbit haemorrhagic disease,
Mexico
Information received on 19/09/2020 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. 16
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 18/09/2020
Date submitted to OIE 19/09/2020
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 (12)
Outbreak 1 Durango, Durango
Date of start of the outbreak 12/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 40 40 34 6 0
Affected population A backyard with 40 rabbits, detected through the notification of the presence of clinical signs (severe respiratory signs, excitation, incoordination and final squeaking). Samples were collected and tested positive for rabbit haemorrhagic disease by RT-PCR techniques.
Outbreak 2 Sain Alto, Zacatecas
Date of start of the outbreak 18/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 60 58 58 2 0
Affected population A backyard with 60 rabbits for meat production, detected through the notification of the presence of clinical signs (bloody and foamy nasal discharge) and sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by RT-PCR techniques.
Outbreak 3 Guadalupe, Zacatecas
Date of start of the outbreak 20/08/2020
Outbreak status Resolved (31/08/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 48 28 28 20 0
Affected population A backyard with 48 rabbits for meat production, detected through the notification of the presence of clinical signs (severe respiratory signs, bloody and foamy nasal discharge) and sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 4 La Paz, Baja California Sur
Date of start of the outbreak 21/08/2020
Outbreak status Resolved (27/08/2020)
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 a pet rabbit, detected by notification due to the sudden death of the animal. Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic tests.
Outbreak 5 La Paz, Baja California Sur
Date of start of the outbreak 24/08/2020
Outbreak status Resolved (28/08/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 8 8 8 0 0
Affected population A backyard with 8 pet rabbits, detected by notification of the presence of clinical signs (excitation, incoordination) and sudden death. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 6 Calera, Zacatecas
Date of start of the outbreak 25/08/2020
Outbreak status Resolved (17/09/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 65 64 64 1 0
Affected population A backyard with 65 rabbits for meat production, detected through the notification of the presence of clinical signs (bloody and foamy nasal discharge and final squeaking) and sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 7 Fresnillo, Zacatecas
Date of start of the outbreak 26/08/2020
Outbreak status Resolved (23/09/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 50 40 40 10 0
Affected population A backyard with 50 pet rabbits, detected by notification of the presence of clinical signs (bloody and foamy nasal discharge and final squeaking) and sudden death. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests.
Outbreak 8 Calera, Zacatecas
Date of start of the outbreak 27/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 14 11 11 3 0
Affected population A backyard with 14 rabbits for meat production, detected through the notification of the presence of clinical signs (bloody and foamy nasal discharge and final squeaking) and sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 9 Calera, Zacatecas
Date of start of the outbreak 28/08/2020
Outbreak status Resolved (22/09/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 60 41 41 19 0
Affected population A backyard with 60 rabbits for meat production, detected through the notification of the presence of clinical signs (bloody and foamy nasal discharge and final squeaking) and sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 10 Guadalupe, Zacatecas
Date of start of the outbreak 28/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 280 40 40 240 0
Affected population A backyard with 280 rabbits for meat production, detected through the notification of the presence of clinical signs (severe respiratory signs, bloody and foamy nasal discharge, excitation, incoordination and final squeaking) and sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 11 Jerez, Zacatecas
Date of start of the outbreak 02/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 30 17 17 13 0
Affected population A backyard with 60 rabbits for meat production, detected through the notification of the presence of clinical signs (bloody and foamy nasal discharge and final squeaking). Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 12 Momax, Zacatecas
Date of start of the outbreak 02/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 15 12 12 3 0
Affected population A backyard with 15 rabbits for meat production, detected through the notification of sudden death. Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Summary of outbreaks Total outbreaks: 12
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 671 360 354 317 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 53.65% 52.76% 98.33% 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 Durango, nine in Zacatecas as well as two in Baja California. 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