There are synchronous undulating variations in the number of ticks and in the incidence of tick-borne encephalitis and Ixodes tick-borne borreliosis in the south of the Tyumen Region. Since 1990s, there has been an increase in the incidence of tick-borne infections and in the number of ticks. The highest epidemic risk areas of 1418 have been treated with acaricides due to the additional financing made by the Tyumen Region in 2002-2004. The treatments with the agents Sipaz-super and Briz (25% c.e. cipermethrin) have ensured 98-100% freedom of the areas from ticks. In Tyumen and in the south of the Tyumen Region, the number of human suction of ticks has reduced from 601 and 1231 per 100,000 in 2001 to 424 and 658 cases in 2004, respectively. The authors have developed guidelines for tick-controlling measures in large areas of the Tyumen Region.
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