Four pneumococcal vaccines are available: Pneumococcal conjugated vaccine PCV13: A conjugated vaccine against 13 serotypes (1, 3, 4, 5, 6A, 6B, 7F, 9V, 14, 18C, 19A, 19F, 23F) Pneumococcal conjugated vaccine PCV15: A conjugated vaccine against 15 serotypes (1, 3, 4, 5, 6A, 6 B, 7F, 9V, 14, 18C, 19A, 19F, 22F, 23F, and 33F) Pneumococcal conjugated vaccine PCV20: A conjugated vaccine against 20 serotypes (1, 3, 4, 5, 6A, 6 B, 7F, 8, 9V, 10A, 11A, 12F, 14, 15B, 18C, 19A, 19F, 22F, 23F, and 33F) Pneumococcal polysaccharide vaccine PPSV23: A polyvalent polysaccharide vaccine directed against the 23 serotypes (1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19F, 19A, 20, 22F, 23F, 33F) that account for > 90% of serious pneumococcal infections in adults and children The vaccine schedules vary depending on age and medical conditions present in the patient.