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Rabbit haemorrhagic disease, Mexico
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Information received on 17/06/2020 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 Cruz, Chihuahua |
Date of start of the outbreak |
29/05/2020 |
Outbreak status |
Resolved (01/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
31 |
24 |
24 |
7 |
0 |
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Affected population |
A backyard with 31 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 2 |
Meoqui, Chihuahua |
Date of start of the outbreak |
29/05/2020 |
Outbreak status |
Resolved (13/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
25 |
20 |
20 |
5 |
0 |
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Affected population |
A backyard with 25 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 3 |
Comondú, Baja California Sur |
Date of start of the outbreak |
30/05/2020 |
Outbreak status |
Resolved (01/07/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
240 |
225 |
225 |
15 |
0 |
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Affected population |
A backyard with 240 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 4 |
Comondú, Baja California Sur |
Date of start of the outbreak |
30/05/2020 |
Outbreak status |
Resolved (07/07/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
144 |
117 |
117 |
27 |
0 |
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Affected population |
A backyard with 144 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 5 |
Ensenada, Baja California |
Date of start of the outbreak |
31/05/2020 |
Outbreak status |
Resolved (07/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
8 |
4 |
4 |
4 |
0 |
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Affected population |
A backyard with 8 rabbits for meat production, detected by notification due to sudden mortality in animals. Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 6 |
Chihuahua, Chihuahua |
Date of start of the outbreak |
02/06/2020 |
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 |
20 |
20 |
0 |
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Affected population |
A backyard with 40 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 7 |
Rosario, Chihuahua |
Date of start of the outbreak |
02/06/2020 |
Outbreak status |
Resolved (16/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
16 |
13 |
13 |
3 |
0 |
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Affected population |
A backyard with 16 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 8 |
Playas de Rosarito, Baja California |
Date of start of the outbreak |
03/06/2020 |
Outbreak status |
Resolved (20/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
9 |
4 |
3 |
6 |
0 |
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Affected population |
A backyard with 9 rabbits, these are pet animals, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 9 |
Tecate, Baja California |
Date of start of the outbreak |
11/06/2020 |
Outbreak status |
Resolved (21/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
53 |
47 |
47 |
6 |
0 |
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Affected population |
A backyard with 53 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Summary of outbreaks |
Total outbreaks: 9 |
Total animals affected |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
566 |
494 |
473 |
93 |
0 |
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Outbreak statistics |
Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
Rabbits |
87.28% |
83.57% |
95.75% |
100.00% |
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*Removed from the susceptible population through death, destruction and/or slaughter |
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Epidemiology
Source of the outbreak(s) or origin of infection |
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Epidemiological comments |
Following epidemiological tracing and increased notification, affected backyards were identified: four in Chihuahua, three in Baja California and two in Baja California Sur. 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. |
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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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