|
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
|
+ +
| | |
- SARS-CoV-2 S protein-expressing BHK cells were reacted with the hospitalized COVID-19 patient sera or COVID-19 PCR-negative donor sera. IF-Intensity was evaluated by observation under a fluorescence microscope. IF-Intensity was stronger in the order of + + + > + + > + > –
