Detection of specific IgM and IgG antibodies in patients sera combined with typical clinical signs, is the principal method for diagnosis. In more complicated situations, e.g. after vaccination,<unk> sting for presence of antibodies in cerebrospinal fluid may be necessary. It has been stated that lumbar puncture always should be performed when diagnosing<unk>  and that pleocytosis in cerebrospinal fluid should be added to the diagnostic criteria. PCR (Polymerase Chain Reaction) method is rarely used, since<unk>  virus RNA is most often not present in patient sera or cerebrospinal fluid at the time of neurological symptoms.
Tick-borne encephalitis
Japanese encephalitis
Eastern equine encephalitis
Brain fever
Saint Louis encephalitis
Cryptic rabies
La Crosse encephalitis
Postvaccinal encephalitis