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Clinical Trial Summary

To evaluate the the immunogenicity and safety of 23-valent pneumococcal polysaccharide vaccine revaccinations in the elderly


Clinical Trial Description

1. Antibody double growth rate in 28-40 days after immunization; 2. Antibody GMC level in 28-40days after immunization; 3. Incidence of adverse reactions in 0-30days. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT04701788
Study type Interventional
Source China National Biotec Group Company Limited
Contact
Status Completed
Phase Phase 4
Start date March 30, 2021
Completion date February 15, 2022

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