SARS-CoV-2/COVID-19,
United States of America
Information received on 21/12/2020 from Dr Mark Davidson, Associate Administrator, USDA-APHIS, United States Department of Agriculture, Washington, United States of America
Summary
Report type Immediate notification
Date of start of the event 27/03/2020
Date of confirmation of the event 04/04/2020
Report date 18/12/2020
Date submitted to OIE 21/12/2020
Reason for notification Emerging disease
Morbidity 2 (scale 0 to 5)
Mortality 1 (scale 0 to 5)
Zoonotic impact Zoonotic potential under investigation
Related reports Immediate notification (18/12/2020)
Follow-up report No. 1 (31/12/2020)
Follow-up report No. 2 (08/01/2021)
Follow-up report No. 3 (12/01/2021)
Follow-up report No. 4 (14/01/2021)
New outbreaks (8)
Outbreak 1 Brazos County, Brazos, Texas
Date of start of the outbreak 22/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 2 2 0 0 0
Affected population Pet domestic cats (Felis catus) in a residential household
Outbreak 2 Okaloosa County, Okaloosa, Florida
Date of start of the outbreak 08/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Dogs 2 1 0 0 0
Affected population Pet domestic dogs (Canis lupus familiaris) in a residential household
Outbreak 3 Washington County, Washington, Pennsylvania
Date of start of the outbreak 13/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Dogs 1 1 0 0 0
Affected population Pet domestic dog (Canis lupus familiaris) in a residential household
Outbreak 4 Brazos County, Brazos, Texas
Date of start of the outbreak 15/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 1 1 0 0 0
Affected population Pet domestic cat (Felis catus) in a residential household
Outbreak 5 Eau Claire County, Eau Claire, Wisconsin
Date of start of the outbreak 17/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 1 1 0 0 0
Affected population Pet domestic cat (Felis catus) in a residential household
Outbreak 6 Tarrant County, Tarrant, Texas
Date of start of the outbreak 20/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 1 1 0 0 0
Affected population Pet domestic cat (Felis catus) in a residential household
Outbreak 7 Jefferson County, Jefferson, Kentucky
Date of start of the outbreak 27/11/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Zoo
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Snow Leopard:Panthera uncia(Felidae) 3 3 0 0 0
Affected population Adult snow leopards (Panthera uncia) in a zoo.
Outbreak 8 Riley County, Riley, Kansas
Date of start of the outbreak 03/12/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Dogs 2 1 0 0 0
Affected population Pet domestic dogs (Canis lupus familiaris) in a residential household
Summary of outbreaks Total outbreaks: 8
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 5 5 0 0 0
Dogs 5 3 0 0 0
Snow Leopard:Panthera uncia(Felidae) 3 3 0 0 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Cats 100.00% 0.00% 0.00% 0.00%
Dogs 60.00% 0.00% 0.00% 0.00%
Snow Leopard:Panthera uncia(Felidae) 100.00% 0.00% 0.00% 0.00%
*Removed from the susceptible population through death, destruction and/or slaughter
Epidemiology
Source of the outbreak(s) or origin of infection
  • Suspected human transmission
Epidemiological comments Texas (TX): A domestic cat from a known positive COVID-19 household was confirmed positive for SARS-CoV-2 at the National Veterinary Services Laboratories (NVSL) based upon molecular testing (PCR and sequencing). The cat showed no clinical signs and continues to be asymptomatic. Samples for this case were collected as part of planned and targeted active surveillance of a specific animal, with known or suspected exposures to a person with COVID-19 or other exposure to SARS-CoV-2, to better understand risk factors for SARS-CoV-2 transmission. Texas (TX): Two domestic cats sharing a known positive COVID-19 household were confirmed positive for SARS-CoV-2 at the NVSL based upon molecular testing (PCR and sequencing). The first cat showed clinical signs of sneezing and coughing. The second cat was asymptomatic. Samples for these cases were collected as part of planned and targeted active surveillance of a specific animal, with known or suspected exposures to a person with COVID-19 or other exposure to SARS-CoV-2, to better understand risk factors for SARS-CoV-2 transmission. Texas (TX): A domestic cat from a known positive COVID-19 household was confirmed positive for SARS-CoV-2 at the NVSL based upon molecular testing (PCR and sequencing). The cat, who showed clinical signs of tremors, vomiting and sneezing, has reportedly recovered. Florida (FL): A domestic dog 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 dog, who had a recent history of respiratory issues with antibiotic and steroid treatment, has reportedly recovered. A second dog in the household has remained asymptomatic. Pennsylvania (PA): A domestic dog 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 dog, who has a chronic history of respiratory issues, was diagnosed with pneumonia in late summer 2020 which reportedly improved with treatment. Recently, the dog was presented to the veterinarian for a recurrence of respiratory clinical signs that did not show improvement with treatment. Testing for comorbidities, including breed-associated autoimmune disease, is in progress. Kentucky (KY): One snow leopard at a zoo was confirmed positive for SARS-CoV-2 at the National Veterinary Services Laboratories based upon molecular testing (PCR and sequencing). The affected snow leopard exhibited mild respiratory clinical signs, including an occasional dry cough or wheeze. Two additional snow leopards who were also showing clinical signs, were sampled and results are pending. It is likely that the SARS-CoV-2 virus was transmitted to the snow leopards by an infected human. All snow leopards are progressively recovering and were removed from public exhibition at the onset of clinical signs. There are no other suspected cases of SARS-CoV-2 in any animals from the zoo at this time. Wisconsin (WI): 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, who showed clinical signs of lethargy, sinus congestion, wheezing, sneezing and nasal discharge has reportedly recovered. Kansas (KS): A domestic dog 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 dog, who was scheduled for a surgical procedure, displayed nasal discharge on pre-surgical examination and was sampled as a precautionary measure. There is a single SARS-CoV-2 event occurrence in the United States of America, however, for WAHIS technical reasons, any new outbreak in the country will be reported from now on in this new event and not in the one first reported in April 2020.
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) Cats gene sequencing 16/11/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats gene sequencing 07/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 16/11/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 07/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs gene sequencing 07/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs gene sequencing 11/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 07/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 11/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Snow Leopard gene sequencing 10/12/2020 Positive
National Veterinary Services Laboratories (National laboratory) Snow Leopard real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 10/12/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations