Volume 28, Number 6—June 2022
Research
Risk Factors for SARS-CoV-2 Infection and Illness in Cats and Dogs1
Figure 2

Figure 2. Mean serum SARS-CoV-2 spike protein IgG as measured by ELISA for samples from household cats, from cats in a shelter (THS), and from cats brought to a spay/neuter clinic for care (TAS), Ontario, Canada. The mean and SD are indicated. Differences were significant for household vs. shelter cats and household vs. clinic cats, but not for shelter vs. clinic cats. OD450, optical density at 450 nm; THS, Toronto Humane Society; TAS, Toronto Animal Services.
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.