METHOD OF PRODUCTION OF LIVE CULTURE INFLUENZA VIRUS VACCINES

摘要

FIELD: medicine. ^ SUBSTANCE: invention refers to biotechnology. Method includes cultivation of transplantable cells MDCK in nutrient medium, production of virus-containing substances by cultivation vaccinating influenza virus strains in MDCK cells culture on the same nutrient medium, virus substance purification from ballast impurities, stabilising additives introduction to purified substance and drying of the finished vaccine form. Thus inoculation dose of transplantable cells MDCK is 100-600 thousand cells per 1 ml of environment. Vaccinating cold-adapted reasortants of influenza virus strains are used as virus strains with inoculation dose of infection multiplicity 0.01-0.0001 "50/-". Serum-free nutrient medium added with soya hydrolysate concentrated 0.01-10% and proteolytic enzyme in amount 0.25-50.0 mkg/ml prior to introduction of influenza virus strains inoculation dose is used as nutrient medium for cultivation of MDCK cells and influenza virus strains on specified cells. Cultivation of MDCK cells cultures and cold-adapted influenza virus strains in specified cell culture is performed in suspensions on microcarriers brought in serum-free nutrient medium in concentration 1-6 g/l. Collection of virus-containing liquid is carried out after specific activity of influenza virus is not less than 8.0 lg ""50/ml. Saccharose and soya peptone in final concentration (5-10) and (3-8) mass % respectively are used as stabilising additives introduced into purified substance before drying. ^ EFFECT: method enables to produce vaccine with lower content of foreign animal protein components. ^ 7 cl, 3 tbl, 7 ex