There are 2 types of vaccines available:
- Pneumococcal Conjugate Vaccine (PCV13)
- Pneumococcal Polysaccharide Vaccine (PPSV23)

PCV13 vaccine protects against 13 pneumococcal bacteria strains that most commonly cause pneumococcal disease, while the PPSV23 protects against 23 strains.
PCV13 when given before PPSV23, provides extended protection in a selected group of patients, as compared to giving PPSV23 alone.