[Early and late acute recurrences of tick-borne encephalitis].

The article analyzes 135 cases of tick-borne encephalitis (TBE) treated at a neurological hospital over the last 20 years. Inapparent form of TBE was diagnosed in 3.7% of cases, febrile in 48.3%, meningeal in 36.3%, focal in 11.7%. Attention is drawn to an increase in recent years of the frequency (up to 44%) of bi-, tri- and multi-wave course of the disease in the acute period (early acute relapses). Of special interest are late acute relapses of TBE observed in 3 patients at 4-9 months after complete recovery. The diagnosis was borne out by the findings of epidemiological, neurological and serological examinations.