| Case number (n = 224) | Percentage |
---|---|---|
Age (median with range, years) | 2.71 (0–15) |  |
  ≤ 3 y/o | 102 | 46% |
  > 3 y/o | 122 | 54% |
Gender | Â | Â |
  Male | 140 | 63% |
  Female | 84 | 38% |
Clinical Severity (Grade 1 to 4) | Â | Â |
  Uncomplicated diseasea | 88 | 39% |
  Myoclonic jerk or aseptic meningitis | 101 | 45% |
  Severe CNS involvementb without cardiopulmonary failure | 22 | 10% |
  Severe CNS involvementb with cardiopulmonary failure | 13 | 6% |
Outcomes | Â | Â |
  Complete recovery | 219 | 98% |
  With sequelaec | 3 | 1% |
  Death | 2 | 1% |