Skip directly to site content Skip directly to page options Skip directly to A-Z link Skip directly to A-Z link Skip directly to A-Z link
Volume 28, Number 6—June 2022

Risk Factors for SARS-CoV-2 Infection and Illness in Cats and Dogs1

Dorothee BienzleComments to Author , Joyce Rousseau, David Marom, Jennifer MacNicol, Linda Jacobson, Stephanie Sparling, Natalie Prystajecky, Erin Fraser, and J. Scott Weese
Author affiliations: Ontario Veterinary College, Guelph, Ontario, Canada (D. Bienzle, J. Rousseau, D. Marom, J. MacNicol, J.S. Weese); Toronto Humane Society, Toronto, Ontario, Canada (L. Jacobson); Toronto Animal Services, Toronto (S. Sparling); BC Centre for Disease Control Public Health Laboratory, Vancouver, British Columbia, Canada (N. Prystajecky); University of British Columbia, Vancouver (N. Prystajecky); Communicable Disease and Immunization Service, BC Centre for Disease Control, Vancouver (E. Fraser); University of British Columbia School of Population and Public Health, Vancouver (E. Fraser)

Main Article

Table 1

Serology results from dogs and cats whose owners had received a diagnosis of SARS-CoV-2 infection or had symptoms compatible with COVID-19 in the previous 3 weeks, Ontario, Canada*

Test result
IgG and IgM
IgG or IgM
Dogs, n = 59
>3 SD 26 (44) 26 (44) 21 (36) 31 (53)
>6 SD
22 (37)
16 (27)
16 (27)
24 (41)
Cats, n = 48
>3 SD 29 (60) 29 (60) 22 (46) 35 (73)
>6 SD 23 (48) 13 (27) 11 (23) 25 (52)

*Values are no. (%). Results were >3 or >6 SD above the mean result for negative controls.

Main Article

1Preliminary results from this study were presented at the 30th (September 23–25, 2020) and 31st (July 9–12, 2021) European Congress of Clinical Microbiology and Infectious Diseases.

Page created: April 28, 2022
Page updated: May 22, 2022
Page reviewed: May 22, 2022
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.