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Rabbit haemorrhagic disease,
Mexico
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Information received on 23/07/2020 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
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Summary
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| Outbreak 1 |
La Paz, Baja California Sur |
| Date of start of the outbreak |
07/07/2020 |
| Outbreak status |
Resolved (11/07/2020) |
| Epidemiological unit |
Backyard |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Black-tailed Jackrabbit:Lepus californicus(Leporidae) |
1 |
1 |
1 |
0 |
0 |
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| Affected population |
Hare found dead. Samples were collected, which were positive for rabbit hemorrhagic disease by HA and RT-PCR technique. |
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| Outbreak 2 |
Comondú, Baja California Sur |
| Date of start of the outbreak |
07/07/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Backyard |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Rabbits |
60 |
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0 |
60 |
0 |
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| Affected population |
Backyard farm with 60 rabbits for meat production, detected by epidemiological surveillance in the area. Samples were collected and tested positive for rabbit haemorrhagic disease using the HA and RT-PCR technique. |
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| Outbreak 3 |
Villa de Cos, Zacatecas |
| Date of start of the outbreak |
08/07/2020 |
| Outbreak status |
Resolved (09/07/2020) |
| Epidemiological unit |
Backyard |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Black-tailed Jackrabbit:Lepus californicus(Leporidae) |
1 |
1 |
1 |
0 |
0 |
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| Affected population |
Hare found dead. Samples were collected, which were positive for rabbit hemorrhagic disease by HA and RT-PCR technique. |
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| Outbreak 4 |
La Paz, Baja California Sur |
| Date of start of the outbreak |
10/07/2020 |
| Outbreak status |
Resolved (25/07/2020) |
| Epidemiological unit |
Backyard |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Rabbits |
25 |
10 |
10 |
15 |
0 |
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| Affected population |
Backyard farm with 25 animals for meat production, detected by a notification due to the presence of clinical signs (bloody and foamy nasal discharge, excitation and incoordination) and sudden animal mortality. Samples were collected and tested positive for haemorrhagic disease in rabbits by HA and RT-PCR techniques. |
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| Outbreak 5 |
La Paz, Baja California Sur |
| Date of start of the outbreak |
10/07/2020 |
| Outbreak status |
Resolved (25/07/2020) |
| Epidemiological unit |
Backyard |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Rabbits |
25 |
3 |
3 |
22 |
0 |
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| Affected population |
Backyard with 25 rabbits for meat production, detected by a notification due to sudden animal mortality . Samples were collected, which were positive for rabbit haemorrhagic disease by HA and RT-PCR technique. |
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| Outbreak 6 |
Mazapil, Zacatecas |
| Date of start of the outbreak |
11/07/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Backyard |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Rabbits |
10 |
2 |
2 |
8 |
0 |
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| Affected population |
Backyard farm with ten animals for meat production, detected by a notification due to the presence of clinical signs suggestive of the disease (severe respiratory signs and bloody-foamy nasal discharge). Samples were collected and tested positive for rabbit haemorrhagic disease by HA and RT-PCR techniques. |
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| Summary of outbreaks |
Total outbreaks: 6 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Black-tailed Jackrabbit:Lepus californicus(Leporidae) |
2 |
2 |
2 |
0 |
0 |
| Rabbits |
120 |
15 ** |
15 |
105 |
0 |
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| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Black-tailed Jackrabbit:Lepus californicus(Leporidae) |
100.00% |
100.00% |
100.00% |
100.00% |
| Rabbits |
** |
12.50% |
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100.00% |
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| *Removed from the susceptible population through death, destruction and/or slaughter |
| **Not calculated because of missing information |
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Epidemiology
| Source of the outbreak(s) or origin of infection |
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| Epidemiological comments |
On the basis of epidemiological traceability and promotion of notification, three affected farms were located in South Lower California and one in Zacatecas, and two dead hares were also located, one in each state mentioned. The farms have been depopulated and are being cleaned and disinfected. Active surveillance continues in these states for possible new cases. Producers in the region have been advised to immediately inform the official veterinary staff of the presence of characteristic signs of rabbit haemorrhagic disease or any dead wild animals in the region, and to avoid movement of rabbits. |
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Control measures
| Measures applied |
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Disinfection
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Stamping out
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Official disposal of carcasses, by-products and waste
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Quarantine
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Surveillance within containment and/or protection zone
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Vaccination prohibited
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No treatment of affected animals
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| Measures to be applied |
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Surveillance outside containment and/or protection zone
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Future Reporting
| The event is continuing. Weekly follow-up reports will be submitted. |
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Map of outbreak locations
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