Lyophilized Meningococcal Polysaccharide Vaccine

Group ACYW135 meningococcal polysaccharide vaccine is a preparation of purified capsular polysaccharide antigens extracted from the cultures of Neisseria meningitidis group A, C, Y, W135 respectively and lyophilized after addition of an appropriate stabilizer. It is used to prevent epidemic cerebrospinal meningitis caused by Neisseria meningitidis group A, C, Y and W135. The final product looks like a white crisp cake. It shall dissolve in the accompanying Phosphate buffered saline (PBS) immediately, and turn into a clear liquid after reconstitution.Active constituent: Neisseria meningitidis group ACYW135 capsular polysaccharides.Subsidiary materials: All the components of subsidiary materials approved shall be listed.Vaccine diluent: Sterile, pyrogen-free PBS.[Specifications]0.5 ml of reconstituted vaccine per container. 0.5 ml per single human dose, containing  200μg of meningococcal polysaccharide (50μg of each polysaccharide of group A,C,Y,W135).[Feature]Fill a gap in our country for the first time by developing 4-valent vaccine .Improve traditional purification technology to eliminate nucleic acid and protein.Improve WHO specifications and high harvest rate. Develop new type of stabilizer. Improve national quality standards. [Administration and dosage] (1) Reconstitute the vaccine with the accompanying PBS as the stated value. Shake and inject immediately. (2) The vaccine shall be injected s. c. at deltoid insertion area of the lateral upper