Table 1. Clinical signs and symptoms of 14 hospitalized patients with Powassan/deer tick virus encephalitis, New York, USA, 2004–2012.
| Sign or symptom | No. (%) patients |
|---|---|
| Fever | 14 (100) |
| Generalized weakness | 12 (86) |
| Lethargy | 10 (72) |
| Confusion | 8 (57) |
| Seizure | 6 (43) |
| Headache | 6 (43) |
| Rash | 6 (43) |
| Nonneurologic symptoms other than rash* | 6 (43) |
| Vomiting | 5 (36) |
| Focal deficit | 5 (36) |
| Neck stiffness | 5 (36) |
| Aphasia | 3 (21) |
| Tremor | 2 (14) |
| Dizziness | 2 (14) |
| Dysarthria | 1 (7) |
| Balance disturbances | 1 (7) |
| Myoclonus | 1 (7) |
*Other symptoms included dyspnea in 2 (14%), abdominal pain in 3 (21%), diarrhea in 1 (7%), dysuria in 1 (7%), body aches in 3 (21%), and rhinorrhea in 1 (7%)