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01.06.2012 | main topic | Ausgabe 11-12/2012

Wiener Medizinische Wochenschrift 11-12/2012

Tick-borne encephalitis: Clinical findings and prognosis in adults

Zeitschrift:
Wiener Medizinische Wochenschrift > Ausgabe 11-12/2012
Autor:
Prof. Dr. Reinhard Kaiser

Summary

In middle and eastern European countries, tick-borne encephalitis (TBE) is one of the most important human infections of the central nervous system. TBE virus (TBEV) is mainly transmitted by tick bites and in very rare cases by unpasteurized milk. The incubation period is on an average 7–10 days. A biphasic course of illness with a prodromal period occurs in about two third of patients. In European countries, TBE presents as meningitis in about 50 % of patients, as meningoencephalitis in 40 %, and as meningoencephalomyelitis in 10 %. The severity of TBE increases with age, in children and adolescents, meningitis is the predominant form of the disease. Long-term prognosis is unfavorable in about 40–50 % of patients who suffer from sequelae for months to years, mainly in terms of pareses, ataxia, and other gait disturbances. No specific treatment for TBE is known so far, but TBE can be successfully prevented by active immunization.

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