| Value | Category | Cases | |
|---|---|---|---|
| 1 | vaccination certificate/card | 8 |
2.9%
|
| 2 | SMS | 71 |
25.5%
|
| 3 | Verbal report | 199 |
71.6%
|
| 96 | Other confirmation | 0 |
0%
|
| 98 | don't know | 0 |
0%
|
| Sysmiss | 573 |