Healthy Volunteers Clinical Trial
Official title:
A Single Center, Randomized, Double-blind, and Intergroup Control Clinical Study to Evaluation on Lot-to-lot Consistency and Immune Persistence of Three Commercial Batches of 23 Valent Pneumococcal Polysaccharide Vaccine
The research objective is to evaluate lot-to-lot consistency and immune persistence of three commercial batches of 23 valent pneumococcal polysaccharide vaccine.
This study adopted a randomized, double-blind, equivalency design with different batches of experimental vaccine. 990 individuals aged 18-59 were included and divided into three groups at a ratio of 1:1:1, with 330 individuals in each group receiving three batches of experimental vaccines, respectively. All subjects were vaccinated with 1 dose of 0.5ml, intramuscularly injected into the lateral deltoid muscle of the upper arm. ;
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