| Signs/Symptoms | Frequency (%) |
| Headache | 89.4 |
| Myalgia | 86.3 |
| Prostration | 74.4 |
| Arthralgia | 69.9 |
| Retro-orbital pain | 69.1 |
| Nausea | 65.5 |
| Rash | 40.3 |
| Diarrhea | 27.8 |
| Abdominal pain | 26.2 |
| Petechiae | 6.8 |
| Epistaxis | 5.7 |
| Shock | 5.4 |
| Gingivorrhagia | 3.0 |
| Hypotension | 2.8 |
| Bleeding | 1.2 |
| Hepatomegaly | 1.2 |
| Metrorrhagia | 0.8 |
| Ascites | 0.8 |