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Rabbit haemorrhagic disease, Mexico
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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
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Summary
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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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 |
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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. |
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Summary of outbreaks |
Total outbreaks: 9 |
Total animals affected |
Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
Rabbits |
279 |
203 |
105 |
139 |
0 |
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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% |
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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 |
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. |
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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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