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[Distribution of antibodies against Encephalitis ixodica viruses among north-east healthy populations of Poland].

We have undertaken the investigations for the detection of the presence of antibodies against Encephalitis ixodica viruses among North-East population of Poland. We have found these antibodies in 6.5% among 676 of tested healthy persons. The highest % of detected antibodies were noted in forest rangers and in physicians acting as hunters. Our data seems to indicate that Encephalitis ixodica is still actual disease in this region. Therefore one can suggest the necessity vaccination against Encephalitis ixodica.