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Résumé :
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Zoonoses may concern persons working outdoor or persons with contact to wild animals. Encephalitis and Lyme-Borreliosis are the most important tick borne infections in Middle Europe. Knowledge of the endemic areas and the danger of infection are essential for prophylactic recommendations. Ticks (Ixodes ricinus) are living in river valleys and forests. Complete clothing may avoid tick bites. Ticks may transmit viruses and bacterias. They must be removed as fast as possible. The most important bacterial tick-borne infection is the Lyme-Borreliosis, which causes sometimes typical erythema, arthropathies and infections of several organs. Borreliosis can be treated with antibiotics. The viral tick-borne disease is the spring-summer-encephalitis, which affects the central nervous system. A vaccination against this infection is necessary for persons living and working in high risk regions (e.g. South West Germany and other countries). In some regions the intestine of foxes is affected by fox tapeworms. Eggs of fox tapeworms may infect humans when eating wild fruits oder funghi, but alveolar echinococcosis is a rare disease. In endemic areas 50 - 70 % of the foxes are bearers of tapeworms.
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