Trial to Evaluate the Safety and Immunogenicity of 3 Lots of 20-valent Pneumococcal Conjugate Vaccine in Pneumococcal Vaccine-Naïve Adults
Conditions
Interventions
- BIOLOGICAL: 20vPnC
- BIOLOGICAL: 20vPnC
- BIOLOGICAL: 20vPnC
- BIOLOGICAL: 13vPnC
Sponsor
Pfizer