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Rabbit haemorrhagic disease,
United States of America
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Information received on 18/12/2020 from Dr Mark Davidson, Associate Administrator, USDA-APHIS,
United States
Department of Agriculture, Washington, United States of America
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Summary
| Report type |
Immediate notification |
| Date of start of the event |
10/12/2020 |
| Date of confirmation of the event |
16/12/2020 |
| Report date |
18/12/2020 |
| Date submitted to OIE |
18/12/2020 |
| Reason for notification |
First occurrence of a listed disease |
| Manifestation of disease |
Sub-clinical infection |
| Causal agent |
Rabbit haemorrhagic disease virus |
| Serotype |
RHDV2 |
| Nature of diagnosis |
Laboratory (advanced) |
| This event pertains to |
a defined zone within the country |
| Related reports |
Immediate notification (18/12/2020)
Follow-up report No. 1 (04/01/2021)
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| Outbreak 1 |
Albany County, Albany, Wyoming |
| Date of start of the outbreak |
10/12/2020 |
| Outbreak status |
Continuing (or date resolved not provided) |
| Epidemiological unit |
Not applicable |
| Affected animals |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Eastern Cottontail:Sylvilagus floridanus(Leporidae) |
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1 |
1 |
0 |
0 |
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| Affected population |
Wild Eastern cottontail rabbit (Sylvilagus floridanus) |
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| Summary of outbreaks |
Total outbreaks: 1 |
| Total animals affected |
| Species |
Susceptible |
Cases |
Deaths |
Killed and disposed of |
Slaughtered |
| Eastern Cottontail:Sylvilagus floridanus(Leporidae) |
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1 |
1 |
0 |
0 |
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| Outbreak statistics |
| Species |
Apparent morbidity rate |
Apparent mortality rate |
Apparent case fatality rate |
Proportion susceptible animals lost* |
| Eastern Cottontail:Sylvilagus floridanus(Leporidae) |
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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 |
Wyoming (WY)--RHDV2 confirmed in a wild Eastern cottontail rabbit (Sylvilagus floridanus) in Albany County, Wyoming.
This is the first detection of RHDV2 in Wyoming and the first detection of RHDV2 in an Eastern cottontail rabbit in the United States.
The Wyoming State Animal Health and Wildlife Officials and USDA, Animal Plant Health Inspection Service (APHIS) will continue to investigate reports of suspect sick or dead wild rabbits and feral or pet domestic rabbits for surveillance. |
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Control measures
| Measures applied |
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Surveillance within containment and/or protection zone
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Vaccination permitted (if a vaccine exists)
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No treatment of affected animals
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| Measures to be applied |
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Diagnostic test results
| Laboratory name and type |
Species |
Test |
Test date |
Result |
| National Veterinary Services Laboratories (National laboratory) |
Eastern Cottontail |
reverse transcription - polymerase chain reaction (RT-PCR) |
16/12/2020 |
Positive |
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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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