US - 2 new outbreaks of SARS-CoV-2/COVID-19 in cat and dog, Texas, Arizona (OIE, July 23, 2020)

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SARS-CoV-2/COVID-19, United States of America

Information received on 23/07/2020 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. 11 Date of start of the event 27/03/2020 Date of confirmation of the event 04/04/2020 Report date 23/07/2020 Date submitted to OIE 23/07/2020 Reason for notification Emerging disease Morbidity 2 (scale 0 to 5) Mortality 0 (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)

New outbreaks (2)

Outbreak 1 Brazos County, Brazos, Texas Date of start of the outbreak 28/06/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Other Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Dogs 2 0 0 0 0 Cats 1 1 0 0 0 Affected population Pet domestic cat (Felis catus) in a residential household

Outbreak 2 Maricopa County, Maricopa, Arizona Date of start of the outbreak 10/07/2020 Outbreak status Continuing (or date resolved not provided) Epidemiological unit Other Affected animals Species Susceptible Cases Deaths Killed and disposed of Slaughtered Dogs 3 1 0 0 0 Cats 1 0 0 0 0 Affected population Pet domestic dog (Canis lupus familiaris) in a residential household

Summary of outbreaks Total outbreaks: 2 Total animals affected Species Susceptible Cases Deaths Killed and disposed of Slaughtered Dogs 5 1 0 0 0 Cats 2 1 0 0 0 Outbreak statistics Species Apparent morbidity rate Apparent mortality rate Apparent case fatality rate Proportion susceptible animals lost* Dogs 20.00% 0.00% 0.00% 0.00% Cats 50.00% 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 23 Jul 2020 Update-- Arizona (AZ): 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 exhibited respiratory clinical signs, but has since reportedly recovered. 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 based upon molecular testing (PCR and sequencing). The cat showed no clinical signs and continues to be asymptomatic. Two dogs residing in the same household have 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 cats and 2 dogs from four households (UT)** 2. 2 dogs from different households (WI)** 3. 1 dog (NC)* As of 23 Jul 2020, total number of animals with detections of virus neutralizing antibody only: 12 *Animal had exposure to a probable or confirmed human with COVID-19 ** Samples 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.

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 21/07/2020 Positive National Veterinary Services Laboratories (National laboratory) Cats real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 21/07/2020 Positive National Veterinary Services Laboratories (National laboratory) Cats virus neutralisation test (VNT) 22/07/2020 Positive National Veterinary Services Laboratories (National laboratory) Dogs gene sequencing 15/07/2020 Positive National Veterinary Services Laboratories (National laboratory) Dogs real-time reverse transcriptase/polymerase chain reaction (RRT-PCR) 15/07/2020 Positive National Veterinary Services Laboratories (National laboratory) Dogs virus neutralisation test (VNT) 22/07/2020 Positive

Future Reporting The event is continuing. Weekly follow-up reports will be submitted.

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https://www.oie.int/wahis_2/public/w...reportid=35140