| No. | Sex | Age | Tick | Headache | Myalgia/ | Fever | EM | Bb serology | A. phagocytophilum serology | ||||
| group | bite | arthralgia | At enrolment | 2 - 3 weeks | 6 months | 1 year | |||||||
| 1 | F | 2 | Yes | + | + | + | − | − | Neg | 80 | Neg | ND | |
| 2 | F | 3 | Yes | + | + | + | − | − | Neg | 80 | ND | Neg | |
| 3 | M | 3 | >1 bite | + | − | − | − | − | Neg | 80 | 80 | Neg | |
| 4 | M | 2 | >1 bite | + | − | − | − | − | Neg | 80 | 80 | 160 | |
| 5 | M | 4 | Yes | − | + | − | − | + | Neg | 160 | ND | 320 | |
| 6 | M | 3 | Yes | + | − | + | − | + | Neg | 80 | Neg | ND | |
| 7 | F | 4 | Yes | + | − | − | + | − | Neg | Neg | 160 | ND | |
| 8 | F | 4 | Yes | + | − | − | + | − | 160 | 160 | 640 | 1280 | |
| 9 | F | 4 | Yes | + | − | − | + | − | Neg | Neg | 80 | Neg | |
| 10 | F | 3 | Yes | + | − | − | + | − | Neg | Neg | 80 | 80 | |
| 11 | M | 1 | Yes | − | + | − | + | − | Neg | Neg | 80 | ND | |
| 12 | M | 3 | Yes | − | + | − | + | − | Neg | 80 | Neg | Neg | |
| 13 | M | 2 | Yes | + | − | + | + | − | Neg | 80 | Neg | ND | |
| 14 | F | 3 | Unknown | + | − | − | + | + | Neg | 40 | 80 | 160 | |
| 15 | M | 3 | Yes | + | − | + | + | + | Neg | 160 | 80 | 80 | |
| 16 | M | 3 | Yes | − | + | + | + | + | Neg | 80 | Neg | ND | |
| 17 | F | 4 | Unknown | + | − | + | + | + | 40 | Neg | 80 | ND | |
| 18 | F | 3 | Unknown | + | − | − | + | + | 40 | Neg | 160 | 80 | |
| 19 | F | 3 | Unknown | + | + | − | + | − | 640 | 320 | Neg | 160 | |
| 20 | M | 3 | Yes | + | − | − | + | − | 640 | 640 | 320 | 640 | |