ALB and viral encephalitis: We compared the baseline characteristics of encephalitis patients between the training set and validation set and found that there was no significant difference between these two groups, including age, gender, WBC, NLR, hemoglobin, albumin, globulin, fever, consciousness disorder, partial seizure, epilepsy frequency, intracranial inflammation by MRI, and electroencephalogram slow wave/fast wave frequency (P > 0.05) (Table 1).