[Donor immunization with an inactivated concentrated purified vaccine against tick-borne encephalitis to obtain immune blood preparations].

Vaccination of seronegative and seropositive donors with a concentrated purified vaccine (CV) against tick-borne encephalitis induced antibody synthesis in a concentration sufficient for preparation of donor immunoglobulin with antibody titres of 1:320 to 1:1280 by HI test. The resulting preparation showed a high antiviral activity both in vivo and in vitro against antigenically different strains of tick-borne encephalitis virus. The immune plasma derived from CV-immunized donors had a therapeutic effect in patients with tick-borne encephalitis. The optimal schedules for immunization of donors are discussed.