SARS-CoV-2/COVID-19,
United States of America
Information received on 30/10/2020 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. 23
Date of start of the event 27/03/2020
Date of confirmation of the event 04/04/2020
Report date 30/10/2020
Date submitted to OIE 30/10/2020
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 Brazos County, Brazos, Texas
Date of start of the outbreak 01/10/2020
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 dog (Canis lupus familiaris) in a residential household
Outbreak 2 Cumberland County, Cumberland, Pennsylvania
Date of start of the outbreak 02/10/2020
Outbreak status Continuing (or date resolved not provided)
Epidemiological unit Other
Affected animals
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Cats 1 1 0 1 0
Affected population Pet domestic cat (Felis catus) in a residential household
Summary of outbreaks Total outbreaks: 2
Total animals affected
Species Susceptible Cases Deaths Killed and disposed of Slaughtered
Dogs 2 1 0 0 0
Cats 1 1 0 1 0
Outbreak statistics
Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost*
Dogs 50.00% 0.00% 0.00% 0.00%
Cats 100.00% 0.00% 0.00% 100.00%
*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 30 Oct 2020 Update-- Pennsylvania (PA): 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 affected cat, which had a history of a gastrointestinal issue, exhibited mild to moderate respiratory clinical signs, including increased respiratory effort and crackles and wheezes heard on auscultation. The animal showed initial improvement on antibiotic and steroid therapy, but was eventually euthanized when its condition worsened. A respiratory swab sample taken from the cat, which first tested positive for SARS-CoV-2, also tested negative by feline respiratory panel. Additional medical workup is underway to determine what other factors may have contributed to the animal's decline. Texas (TX): 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 affected dog showed clinical signs of diarrhea and lethargy. One additional dog residing in the same household has remained asymptomatic and tested negative for SARS-CoV-2 by PCR. 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. Virus neutralizing antibodies in the absence of other positive test results have been detected in the following animals (listed by state): 1. 4 dogs and 2 cats from three households (TX)** As of 30 Oct 2020, total number of animals with detections of virus neutralizing antibody in the absence of other positive test results:50 **Samples collected as part of planned and targeted active surveillance of specific animals, 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.
Control measures
Measures applied
  • Disinfection
  • Quarantine
  • 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 16/10/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 16/10/2020 Positive
National Veterinary Services Laboratories (National laboratory) Cats virus neutralisation test (VNT) 21/10/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs gene sequencing 21/10/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 21/10/2020 Positive
National Veterinary Services Laboratories (National laboratory) Dogs virus neutralisation test (VNT) 21/10/2020 Positive
Future Reporting
The event is continuing. Weekly follow-up reports will be submitted.
Map of outbreak locations