Phase 3 trial to evaluate the safety, tolerability, and immunogenicity of V114, a 15-valent pneumococcal conjugate vaccine, followed by 23-valent pneumococcal polysaccharide vaccine 6 months later, in at-risk adults 18-49 years of age (PNEU-DAY): A subgroup analysis by baseline risk factors. - Hammitt LL; Quinn D; Janczewska E; Pasquel FJ; Tytus R; Reddy KR; Abarca K; Khaertynova IM; Dagan R; Dawson R; McCauley J; Shekar T; et al. (Human vaccines & immunotherapeutics, 2023)