Clinical Features of West Nile Virus Meningoencephalitis (n = 7)
| Age, median (range) | 55 (24–74) |
| Sex | 4 male, 3 female |
| Days since symptoms onset, mean (range) | 3.5 (1–7) |
| Headache | 100% |
| Nausea and vomiting | 83% |
| Photophobia | 66% |
| Chills | 66% |
| Malaise | 66% |
| Fever | 50% |
| Mental status changes | 33% |