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A Clinical Trial to Evaluate the Immunogenicity and Safety of PPV23 Vaccine Revaccinations in the Elderly

Vaccination Clinical Trial

Official title:
A Phase Ⅳ Clinical Trial to Evaluate the Immunogenicity and Safety of 23-valent Pneumococcal Polysaccharide Vaccine Revaccinations in the Elderly

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

Clinical Trial Details
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
View Details
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