Rabbit haemorrhagic disease,
Mexico
Information received on 18/08/2020 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. 14
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 18/08/2020
Date submitted to OIE 18/08/2020
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)
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)
Follow-up report No. 22 (09/12/2020)
Follow-up report No. 23 (15/01/2021)
Follow-up report No. 24 (20/01/2021)
New outbreaks (9)
Outbreak 1 Canatlán, Durango
Date of start of the outbreak 30/07/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 40 40 5 35 0
Affected population This is a backyard property with 40 rabbits for breeding, detected through the notification of the presence of clinical signs compatible with the disease (severe respiratory signs, excitation, incoordination and terminal screeching). Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 2 Durango, Durango
Date of start of the outbreak 02/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 25 25 7 18 0
Affected population This is a backyard property with 25 pet rabbits, detected through the notification of the presence of clinical signs compatible with the disease (severe respiratory signs, bloody and frothy nasal discharge, excitement, incoordination and sudden death). Samples were collected, which were positive for rabbit hemorrhagic disease by the RT-PCR technique.
Outbreak 3 Durango, Durango
Date of start of the outbreak 04/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 13 13 8 5 0
Affected population This is a backyard property with 13 rabbits for meat production, detected through the notification of the presence of clinical signs compatible with the disease (severe respiratory signs, terminal screeching and sudden death). Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 4 Durango, Durango
Date of start of the outbreak 05/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 21 21 16 5 0
Affected population This is a backyard property with 21 pet rabbits, detected through the notification of the presence of clinical signs compatible with the disease (terminal scream and sudden death). Samples were collected, which were positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 5 Rio Grande, Zacatecas
Date of start of the outbreak 05/08/2020
Outbreak status Resolved (18/08/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 25 5 5 20 0
Affected population This is a backyard property with 25 rabbits for meat production, detected through the notification of the sudden death of the animals. Samples were collected, which were positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Outbreak 6 Rio Grande, Zacatecas
Date of start of the outbreak 05/08/2020
Outbreak status Resolved (13/08/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 45 40 5 5 0
Affected population This is a backyard property with 45 rabbits for meat production, detected through the notification of the presence of clinical signs compatible with the disease (severe respiratory signs, bloody and frothy nasal discharge, terminal screeching and sudden death). Samples were collected and tested positive for rabbit haemorrhagic disease by the RT-PCR technique.
Outbreak 7 Fresnillo, Zacatecas
Date of start of the outbreak 06/08/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 60 20 20 40 0
Affected population This is a backyard property with 60 rabbits for meat production, detected through the notification of sudden death. Samples were collected, which were positive for rabbit haemorrhagic disease by the RT-PCR technique.
Outbreak 8 Jerez, Zacatecas
Date of start of the outbreak 08/08/2020
Outbreak status Resolved (22/08/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 43 33 33 10 0
Affected population This is a backyard property with 43 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 9 Jerez 2, Zacatecas
Date of start of the outbreak 08/08/2020
Outbreak status Resolved (22/08/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 7 6 6 1 0
Affected population This is a backyard property with seven rabbits for meat production, detected through the notification of sudden death. Samples were collected, which were positive for rabbit haemorrhagic disease by HA and RT-PCR techniques.
Summary of outbreaks Total outbreaks: 9
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 279 203 105 139 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 72.76% 37.63% 51.72% 87.46%
*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 Based on the epidemiological screening and promotion of the notification made, four affected farms have been located in Durango and five in Zacatecas. The farms have been depopulated and are in the process of being cleaned and disinfected. Active surveillance continues in these States in search of possible new cases. Producers in the area were advised to immediately notify official veterinary personnel of the presence of characteristic signs of RHD or any dead wild animals in the area, as well as to avoid the movement 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