Table 4.
Enzyme-linked immunosorbent assay that detects antibodies binding to the SARS-CoV-2 spike glycoprotein receptor-binding domain (RBD ELISA) and SARS-CoV-2 Surrogate Virus Neutralization Test Kit (sVNT) results in cats and dogs in COVID-19-affected households.
| Animal ID 1 | Date of Blood Collection for Serology | Days after First Positive RT-qPCR of the Animal | RBD Elisa | Percentage of Positive Control | sVNT | Percentage Inhibition |
|---|---|---|---|---|---|---|
| Dog 22.1 | 28 February 2022 | 102 | Negative | Negative | ||
| Cat 22.2 | 28 February 2022 | 100 | Positive | 71 | Positive | 88 |
| Dog 29.1 | 28 December 2021 | 34 | Positive | 33 | Positive | 62 |
| Cat 39.1 | 3 February 2022 | 56 | Positive | 151 | Positive | 100 |
| Cat 39.2 | 3 February 2022 | 56 | Positive | 125 | Positive | 95 |
| Cat 36.1 | 3 January 2022 | 26 | Positive | 130 | Positive | 94 |
| Cat 49.1 | 8 March 2022 | 69 | Positive | 102 | Positive | 100 |
| Cat 49.2 | 8 February 2022 | 41 | Positive | 96 | Negative 2 | 69 |
| Dog 149.1 | 21 December 2022 | N/A 3 | Positive | 55 | Positive | 58 |
| Cat 174.1 | 21 December 2022 | N/A 3 | Positive | 125 | Positive | 100 |
| Cat 174.2 | 21 December 2022 | N/A 3 | Positive | 135 | Positive | 100 |
| Cat 211.1 | 9 February 2022 | N/A 3 | Positive | 147 | Positive | 101 |
1 Only animals are listed with samples available for serology (see also Table 1). 2 Not positive in sVNT, but confirmed serologically positive in PVNT 3. N/A: not available: no swab samples and thus no RT-qPCR result available for these animals.