Table 1 Intensity of IF positive cells expressing SARS-CoV-2 S protein
Hospitalized COVID-19 patient sera | COVID-19 PCR-negative donor sera | ||
|---|---|---|---|
No | IF-Intensity | No | IF-Intensity |
1 |  +  +  +  | 1 | – |
2 |  +  +  +  | 2 | – |
3 |  +  +  | 3 | – |
4 |  +  +  +  | 4 | – |
5 |  +  +  +  | 5 | – |
6 |  +  +  +  | 6 | – |
7 |  +  +  +  | 7 | – |
8 |  +  +  +  | 8 | – |
9 |  +  +  +  | 9 | – |
10 |  +  +  | 10 | – |
11 |  +  +  +  | 11 | – |
12 |  +  +  +  | 12 | – |
13 | – | 13 | – |
14 | – | 14 | – |
15 | – | 15 | – |
16 | – | 16 | – |
17 | – | 17 | – |
18 |  +  | 18 | – |
19 | – | 19 | – |
20 |  +  |  |  |
21 |  +  +  |  |  |
22 |  +  +  |  |  |
23 |  +  +  |  |  |