| Clinical signs | Number (n = 203) | Percentage |
| Physical asthenia | 183 | 90.14% |
| Dyspnea | 160 | 78.81% |
| Cough | 106 | 52.21% |
| Chest pain | 54 | 26.60% |
| Aches and myalgias | 106 | 52.21% |
| Fever with or without chills | 89 | 43.84% |
| Anorexia | 62 | 30.50% |
| Headaches | 58 | 28.57% |
| Intestinal transit disorders | 27 | 13.30% |
| Rhinorrhea | 22 | 10.84% |
| Anosmia | 12 | 5.91% |
| Hiccups | 11 | 5.41% |
| Odynophagia | 11 | 5.41% |
| Ageusia | 4 | 1.97% |