FIELD: medicine, infections. SUBSTANCE: vaccine preparation has Vi-antigen from Salmonella typhi treated with ribonucleases and pronase and purified by gel-filtration and sodium hydrogen phosphate and sodium ortho-phosphate and phenol for preserving. Immunogenic properties of preparation are similar to that of foreign analogue and can be used successfully as a specific protecting agent at typhoid fever. EFFECT: enhanced effectiveness of preparation. 8 tbl, 5 ex
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