Rabbit haemorrhagic disease,
United States of America
Information received on 21/09/2018 from Dr John Clifford, Official Delegate, Chief Trade Advisor, Animal and Plant Health Inspection Service, United States Department of Agriculture, Washington, United States of America
Summary
Report type Immediate notification
Date of start of the event 17/08/2018
Date of confirmation of the event 19/09/2018
Report date 21/09/2018
Date submitted to OIE 21/09/2018
Date event resolved 05/10/2018
Reason for notification New strain of a listed disease in the country
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 (21/09/2018)
Follow-up report No. 1 (27/11/2018)
New outbreaks (1)
Outbreak 1 Medina County, Medina, Ohio
Date of start of the outbreak 17/08/2018
Outbreak status Resolved (05/10/2018)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Hares / rabbits 5 4 4 1 0
Affected population Non-commercial pet rabbits.
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Hares / rabbits 5 4 4 1 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Hares / rabbits 80.00% 80.00% 100.00% 100.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments The rabbits, which were pets, were housed in horse stalls and ran free in those stalls. The USDA, Animal Plant Health Inspection Services (APHIS), and the Ohio Department of Agriculture are conducting a comprehensive epidemiological investigation of this event. This is the first detection of rabbit hemorrhagic disease virus 2 in the United States.
Control measures
Measures applied
  • Disinfection
  • Vaccination prohibited
  • No treatment of affected animals
Measures to be applied
  • No other measures
Diagnostic test results
Laboratory name and type Species Test Test date Result
National Veterinary Services Laboratories - Foreign Animal Disease Diagnostic Laboratory (National laboratory) Hares / rabbits antigen (Ag) detection ELISA 19/09/2018 Positive
National Veterinary Services Laboratories - Foreign Animal Disease Diagnostic Laboratory (National laboratory) Hares / rabbits antigen (Ag) detection ELISA 20/09/2018 Positive
National Veterinary Services Laboratories - Foreign Animal Disease Diagnostic Laboratory (National laboratory) Hares / rabbits real-time PCR 19/09/2018 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations