Participants will be randomized to 1 of 3 cohorts depending upon prior vaccinations. Prior vaccinations by cohort include: PPSV23 (pneumococcal vaccine, polyvalent [23-valent], PNEUMOVAX™23) for Cohort 1; PCV13 (pneumococcal 13-valent conjugate vaccine; PREVNAR 13™) for Cohort 2; PCV15 (pneumococcal 15-valent conjugate vaccine; VAXNEUVANCE™), PCV20 (pneumococcal 20-valent conjugate vaccine; PREVNAR 20™), PCV13+PPSV23, PCV15+PPSV23, or PPSV23+PCV13 for Cohort 3.
This a study of V116 in adults ≥50 years of age who previously received a pneumococcal vaccination ≥1 year before enrollment. The primary objectives of this study are to evaluate the safety, tolerability, and immunogenicity of V116.