SARS-CoV-2/COVID-19,
United States of America
Information received on 24/09/2020 from Dr Mark Davidson, Associate Administrator, USDA-APHIS, United States Department of Agriculture, Washington, United States of America
Summary
Report type Follow-up report No. 19
Date of start of the event 27/03/2020
Date of confirmation of the event 04/04/2020
Report date 24/09/2020
Date submitted to OIE 24/09/2020
Reason for notification Emerging disease
Morbidity 2 (scale 0 to 5)
Mortality 1 (scale 0 to 5)
Zoonotic impact Zoonotic potential currently unknown
Causal agent SARS-CoV-2/COVID-19
Related reports Immediate notification (06/04/2020)
Follow-up report No. 1 (17/04/2020)
Follow-up report No. 2 (22/04/2020)
Follow-up report No. 3 (29/04/2020)
Follow-up report No. 4 (02/06/2020)
Follow-up report No. 5 (03/06/2020)
Follow-up report No. 6 (10/06/2020)
Follow-up report No. 7 (25/06/2020)
Follow-up report No. 8 (02/07/2020)
Follow-up report No. 9 (09/07/2020)
Follow-up report No. 10 (17/07/2020)
Follow-up report No. 11 (23/07/2020)
Follow-up report No. 12 (30/07/2020)
Follow-up report No. 13 (05/08/2020)
Follow-up report No. 14 (13/08/2020)
Follow-up report No. 15 (20/08/2020)
Follow-up report No. 16 (27/08/2020)
Follow-up report No. 17 (02/09/2020)
Follow-up report No. 18 (10/09/2020)
Follow-up report No. 19 (24/09/2020)
Follow-up report No. 20 (02/10/2020)
Follow-up report No. 21 (09/10/2020)
Follow-up report No. 22 (16/10/2020)
Follow-up report No. 23 (30/10/2020)
Follow-up report No. 24 (06/11/2020)
Follow-up report No. 25 (16/11/2020)
New outbreaks (2)
Outbreak 1 Fayette County, Fayette, Kentucky
Date of start of the outbreak 06/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 3 1 0 0 0
Affected population Pet domestic cat (Felis catus) in a residential household.
Outbreak 2 Utah, Utah
Date of start of the outbreak 08/09/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Farm
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
American Mink:Neovison vison(Mustelidae) 1500 59 0 0
Affected population Domestic American Mink (Neovison vison) on a commercial farm
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 3 1 0 0 0
American Mink:Neovison vison(Mustelidae) 1500 ** 59 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cats 33.33% 0.00% 0.00% 0.00%
American Mink:Neovison vison(Mustelidae) ** 3.93% ** 3.93%
*Removed from the susceptible population through death, destruction and/or slaughter
**Not calculated because of missing information
Epidemiology
Source of the outbreak(s) or origin of infection
  • Suspected human transmission
Epidemiological comments 24 Sep 2020 Update-- Louisiana (LA): Virus neutralizing antibody for SARS-CoV-2 was detected in the affected cat from Rapides Parish as well as two other cats who share the same household. Kentucky (KY): A domestic cat from a known positive COVID-19 household was confirmed positive for SARS-CoV-2 at the National Veterinary Services Laboratories based upon molecular testing (PCR and sequencing). The cat showed clinical signs of increased respiratory rate, congestion, sneezing, cough and some vomiting. Two other cats residing in the same household have shown mild clinical signs and will also be tested for SARS-CoV-2. Utah (UT): Following increased mortality rates, domestic American Mink (Neovison vison) from one commercial premises were confirmed positive for SARS-CoV-2 at the National Veterinary Services Laboratories based upon molecular testing results (PCR and sequencing) and meeting case definition. Confirmed cases of SARS-CoV-2 in domestic mink from the United States have now been identified on six commercial premises. Clinical signs included ill thrift and sudden death. The affected premises reported a confirmed positive case of COVID-19 in a person that was in contact with the mink. State Officials in Utah have quarantined the premises and are working closely with federal One Health partners to complete carcass disposal and monitor the situation. Mink mortality rates on the affected premises have since decreased, returning to normal levels. Please note: To protect confidentiality of any data related to human cases, the location used for this outbreak is that of the Utah Veterinary Diagnostic Laboratory (UVDL), where animal testing samples were first collected. Due to limitations with the WAHIS system, the map notation indicates disease outbreaks in wild mink, however the affected populations are domesticated American Mink (Neovison vison) from commercial premises as stated above.
Control measures
Measures applied
  • Quarantine
  • Disinfection
  • Vaccination permitted (if a vaccine exists)
  • 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) American Mink gene sequencing 17/09/2020 Positive
National Veterinary Services Laboratories (National laboratory) American Mink real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 17/09/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats gene sequencing 17/09/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 17/09/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats virus neutralisation test (VNT) 17/09/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats virus neutralisation test (VNT) 22/09/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs virus neutralisation test (VNT) 22/09/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations