Rabbit haemorrhagic disease,
Mexico
Information received on 22/04/2020 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. 1
Date of start of the event 03/04/2020
Date of confirmation of the event 08/04/2020
Report date 22/04/2020
Date submitted to OIE 22/04/2020
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)
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 (6)
Outbreak 1 Nueva Casas Grandes, Chihuahua
Date of start of the outbreak 12/04/2020
Outbreak status Resolved (16/04/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 48 1 1 47 0
Affected population A backyard with 48 adult animals, these are pet animals, detected by notification due to sudden mortality in animals and the presence of clinical signs suggestive of the disease (sudden death).
Outbreak 2 Jiménez, Chihuahua
Date of start of the outbreak 12/04/2020
Outbreak status Resolved (15/04/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 15 9 9 6 0
Affected population A backyard with 15 adult animals, these are pet animals, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory problems, dyspnea, sudden death).
Outbreak 3 Jiménez, Chihuahua
Date of start of the outbreak 14/04/2020
Outbreak status Resolved (19/04/2020)
Epidemiological unit Backyard
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 180 180 160 20 0
Affected population A backyard with 180 adult animals for meat production, detected by notification following sudden mortality in animals and the presence of clinical signs suggesting the disease (sudden death).
Outbreak cluster 4 Jiménez, Chihuahua (3 outbreaks)
Date of start of the outbreak 15/04/2020
Outbreak status Resolved (19/04/2020)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Black-tailed Jackrabbit:Lepus californicus(Leporidae) 3 3 0 0
Affected population Dead wild animals were found near the outbreaks of the Jiménez municipality, this was notified to the authorities by the municipality inhabitants.
Summary of outbreaks Total outbreaks: 6
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 243 190 170 73 0
Black-tailed Jackrabbit:Lepus californicus(Leporidae) 3 3 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits 78.19% 69.96% 89.47% 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 Following the epidemiological tracing carried out in the state of Chihuahua, an affected backyard has been located in the municipality of Nuevas Casas Grandes and two additional ones in Jiménez. They have been depopulated and are in the process of cleaning and disinfection. Some dead wild animals were reported in the municipality of Jiménez. For confirmation of the diagnosis, RT-PCR test is being performed. Active surveillance by the State continues for possible new cases. It is important to emphasize that this is not a rabbit breeding zone at national level and the population is very limited.
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