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| Clinical signs/symptoms |
No. (%) patients |
| Fever | 86 (86.9) |
| Headache | 71 (71.7) |
| General malaise | 51 (51.5) |
| Arthralgia | 22 (22.2) |
| Asthenia | 18 (18.1) |
| Anorexia | 16 (16.2) |
| Retroocular pain | 14 (14.1) |
| Abdominal pain | 8 (8) |
| Vomiting | 7 (7) |
| Diarrhea | 7 (7) |
| Chills | 4 (4) |
| Lumbar pain | 3 (3) |
