Pneumonia Clinical Trial
Official title:
Safety and Immunogenicity of Pneumococcal Protein Vaccine (PPrV) in Healthy Adults, Toddlers and Infants in Bangladesh
This study is designed to explore the safety and tolerability of an investigational
pneumococcal vaccine through a step-down enrollment.
Primary Objective:
- To evaluate the safety and tolerability of an investigational pneumococcal vaccine.
Secondary Objective:
- To evaluate the immunogenicity of an investigational pneumococcal vaccine.
All adult participants will receive a single injection of study vaccine or placebo. After satisfactory safety evaluation, toddler participants will receive a single injection of study vaccine or placebo. After satisfactory safety evaluation, infant participants will receive 3 injections of study vaccine or placebo in dose-ascending order (low, medium, and high dose), with a safety evaluation after each dose level before the study proceeds to the next higher dose. All participants will undergo immunogenicity testing and monitoring for safety. ;
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