Baseline characteristics for all patients with Acute Encephalitis Syndrome eligible for study inclusion.

Characteristics presented as number (%) or median (range).AES, Acute Encephalitis Syndrome; No., number; GCS, modified Glasgow coma scale (score 3–15); LOS, Liverpool Outcome Score (1 [died] – 5 [no impairment]); na, not applicable.*Significant difference in the median age among patients Followed and Not Followed up, p = 0.029.‡Discharge GCS was not available for 3 patients who were followed up.¶Discharge LOS was not available for 25 patients (19 followed up and 6 not).