Rabbit haemorrhagic disease,
United States of America
Information received on 06/03/2020 from Dr Mark Davidson, Associate Administrator, USDA-APHIS, United States Department of Agriculture, Washington, United States of America
Report type Follow-up report No. 6
Date of start of the event 08/07/2019
Date of confirmation of the event 17/07/2019
Report date 06/03/2020
Date submitted to OIE 06/03/2020
Date event resolved 03/07/2020
Reason for notification Recurrence of a listed disease
Date of previous occurrence 16/04/2019
Manifestation of disease Clinical disease
Causal agent Rabbit haemorrhagic disease virus
Serotype RHDV2
Nature of diagnosis Laboratory (advanced)
This event pertains to the whole country
Related reports Immediate notification (19/07/2019)
Follow-up report No. 1 (08/08/2019)
Follow-up report No. 2 (16/08/2019)
Follow-up report No. 3 (30/08/2019)
Follow-up report No. 4 (03/12/2019)
Follow-up report No. 5 (07/01/2020)
Follow-up report No. 6 (06/03/2020)
Follow-up report No. 7 (13/03/2020)
Follow-up report No. 8 (27/03/2020)
Follow-up report No. 9 (06/04/2020)
Follow-up report No. 10 (13/04/2020)
Follow-up report No. 11 (20/04/2020)
Follow-up report No. 12 (27/04/2020)
Follow-up report No. 13 (05/05/2020)
Follow-up report No. 14 (13/05/2020)
Follow-up report No. 15 (19/05/2020)
Follow-up report No. 16 (27/05/2020)
Follow-up report No. 17 (01/06/2020)
Follow-up report No. 18 (09/06/2020)
Follow-up report No. 19 (17/06/2020)
Follow-up report No. 20 (23/06/2020)
Follow-up report No. 21 (29/06/2020)
Follow-up report No. 22 (02/07/2020)
New outbreaks (1)
Outbreak 1 New York, New York County, New York
Date of start of the outbreak 18/02/2020
Outbreak status Resolved (18/04/2020)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 13 13 0 0
Affected population Non-commercial rabbits (Oryctolagus cuniculus) housed at an avian and exotics veterinary clinic as patients, boarders and rescues
Summary of outbreaks Total outbreaks: 1
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Rabbits 13 13 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Rabbits ** ** 100.00% **
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Source of the outbreak(s) or origin of infection
  • Unknown or inconclusive
Epidemiological comments Update March 6, 2020: RHDV2 confirmed in rabbits (Oryctolagus cuniculus) associated with a New York veterinary clinic. The New York State Veterinarianís Office and the United States Department of Agriculture (USDA), Animal and Plant Health Inspection Services (APHIS) are conducting epidemiological investigations of this outbreak. Disease tracebacks and testing are ongoing. Currently, there are no known links to outbreak events in Washington. Vaccination clinic held in Clallam County, Washington.
Control measures
Measures applied
  • Disinfection
  • Quarantine
  • Traceability
  • Surveillance within containment and/or protection zone
  • 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 (National laboratory) Rabbits antigen (Ag) detection ELISA 03/03/2020 Positive
National Veterinary Services Laboratories (National laboratory) Rabbits reverse transcription - polymerase chain reaction (RT-PCR) 03/03/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations