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Rabbit haemorrhagic disease, Mexico
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Information received on 01/07/2020 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 |
Cuauhtémoc, Chihuahua |
Date of start of the outbreak |
12/06/2020 |
Outbreak status |
Resolved (01/07/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
26 |
26 |
26 |
0 |
0 |
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Affected population |
A backyard with 26 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory symptoms and 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 |
Lerdo, Durango |
Date of start of the outbreak |
13/06/2020 |
Outbreak status |
Continuing (or date resolved not provided) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
10 |
6 |
4 |
6 |
0 |
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Affected population |
A backyard with 10 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 3 |
Mazapil, Zacatecas |
Date of start of the outbreak |
14/06/2020 |
Outbreak status |
Resolved (20/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
25 |
24 |
24 |
1 |
0 |
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Affected population |
A backyard with 25 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory symptoms, 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 4 |
Mazapil, Zacatecas |
Date of start of the outbreak |
14/06/2020 |
Outbreak status |
Resolved (20/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
50 |
49 |
49 |
1 |
0 |
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Affected population |
A backyard with 50 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory symptoms, bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test. |
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Outbreak 5 |
Gómez Palacio, Durango |
Date of start of the outbreak |
15/06/2020 |
Outbreak status |
Resolved (07/07/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
15 |
15 |
4 |
11 |
0 |
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Affected population |
A backyard with 15 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (severe respiratory symptoms, excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test. |
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Outbreak 6 |
Comondú, Baja California Sur |
Date of start of the outbreak |
16/06/2020 |
Outbreak status |
Resolved (06/07/2020) |
Epidemiological unit |
Other |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
43 |
3 |
3 |
40 |
0 |
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Affected population |
A Management Unit for Widlife Conservation with 43 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (haemorrhagic rhinitis, bloody and foamy nasal discharge, final squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test.
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Outbreak 7 |
Tecate, Baja California |
Date of start of the outbreak |
17/06/2020 |
Outbreak status |
Resolved (17/06/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
200 |
95 |
75 |
125 |
0 |
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Affected population |
A backyard with 200 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation, incoordination and finjal squeaking). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test. |
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Outbreak 8 |
Ensenada, Baja California |
Date of start of the outbreak |
18/06/2020 |
Outbreak status |
Resolved (04/07/2020) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
260 |
120 |
120 |
140 |
0 |
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Affected population |
A backyard with 260 rabbits for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test. |
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Outbreak 9 |
Lerdo, Durango |
Date of start of the outbreak |
20/06/2020 |
Outbreak status |
Continuing (or date resolved not provided) |
Epidemiological unit |
Farm |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
280 |
100 |
70 |
210 |
0 |
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Affected population |
A high tech farm with 280 animals for meat production, detected by notification due to sudden mortality in animals and the presence of clinical signs suggesting the disease (excitation and incoordination). Samples were collected that tested positive to rabbit haemorrhagic disease with haemagglutination and RT-PCR diagnostic tests. |
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Outbreak 10 |
Tecate, Baja California |
Date of start of the outbreak |
22/06/2020 |
Outbreak status |
Continuing (or date resolved not provided) |
Epidemiological unit |
Backyard |
Affected animals |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
14 |
1 |
1 |
13 |
0 |
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Affected population |
A backyard with 14 animals for meat production, detected by notification due to sudden mortality in animals. Samples were collected that tested positive to rabbit haemorrhagic disease with RT-PCR diagnostic test. |
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Summary of outbreaks |
Total outbreaks: 10 |
Total animals affected |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
923 |
439 |
376 |
547 |
0 |
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Outbreak statistics |
Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
Rabbits |
47.56% |
40.74% |
85.65% |
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: three in Baja California, one in Baja California Sur, one in Chihuahua, three in Durango and two in Zacatecas. 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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Surveillance within containment and/or protection zone
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Quarantine
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Official disposal of carcasses, by-products and waste
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Stamping out
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Disinfection
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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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