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[Experience in implementing the mass immunization program against tick-borne encephalitis in the Sverdlovsk Region].

The urgency of the tick-borne encephalitis (TBE) problem in the Sverdlovsk Region is determined by the high rates of morbidity, disability, and mortality in all age groups, which is associated with the high activity of a natural focus of TBE. A regional mass immunization program against TBE has been developed and put into practice to reduce morbidity in the Sverdlovsk Region. Implementation of the program requires the administration of all the vaccines registered and permitted for use in the Russian Federation. Studies have shown their high epidemiological and immunological effectiveness.