Pneumococcal Infections Clinical Trial
Official title:
A Randomized, Double-blind Clinical Trial to Evaluate the Lot Consistency, Immunogenicity and Safety of 23-valent Pneumococcal Polysaccharide Vaccine in Adults Aged 40-65 Years
This study is a randomized, double-blind phase Ⅳ clinical trial of 23-valent pneumococcal polysaccharide vaccine manufactured by Sinovac Biotech Co., Ltd.The purpose of this study is to evaluate the consistency of three consecutive lots, immunogenicity and safety of 23-valent pneumococcal polysaccharide vaccine of commercial scale in participants aged 40-65 years.
This study is a randomized, double-blind phase Ⅳ clinical trial in subjects aged 40-65 years to evaluate the lot-to-lot consistency,immunogenicity and safety of 23-valent pneumococcal polysaccharide vaccine of commercial scale.The experimental vaccine was manufactured by Sinovac Biotech Co., Ltd.A total of 1800 subjects will be enrolled.The subjects will be randomly divided into three groups in a ratio of 1:1:1 to received one dose of vaccine on day 0. ;
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