Table 1 Case definitions
Encephalopathy | Decreased/altered consciousness (unconsciousness, the patient is hard to keep awake or extensively tiredness) and/or change in cognitive function (bewilderment, disorientation, latency, reduced ability to recall history or data) and/or personality change (aggression, new onset feeling of despair, inadequate/ strange behavior) |
Encephalitis | Encephalopathy (=major criterion) for more than > 24 hrs, with no other cause identified and at least 2 of the following: Objective fever (≥38 °C) CSF WBC count ≥5 × 106/L New onset seizures New onset of focal neurological findings CT/ MR findings consistent with encephalitis EEG findings consistent with encephalitis |