A Study to Learn About the Safety and Immune Response of a New Pneumococcal Vaccine in Adults

Conditions: Pneumococcal Disease Interventions: Biological: Multivalent Pneumococcal Vaccine - Formulation 1; Biological: Multivalent Pneumococcal Vaccine - Formulation 2; Biological: 20-valent pneumococcal conjugate vaccine (20vPnC) Sponsors: Pfizer Not yet recruiting
Source: ClinicalTrials.gov - Category: Research Source Type: clinical trials