infections
Pneumococcal Vaccine
Introduction
 (pneumococci). Pneumococcal Infections include For more information, see the Centers for Disease Control and Prevention's (CDC)Pneumococcal Vaccination: What Everyone Should Know,Pneumococcal Conjugate (Interim) vaccine information statement, andPneumococcal Polysaccharide vaccine information statement. (See also Overview of Immunization .) There are more than 90 different types of pneumococci. Vaccines are directed against many of the types most likely to cause serious disease. Two types of pneumococcal vaccines are available: conjugate and polysaccharide. The conjugate vaccine PCV13 protects against 13 types of pneumococcal bacteria (pneumococci). The conjugate vaccine PCV15 protects against 15 types of pneumococci. The conjugate vaccine PCV20 protects against 20 types of pneumococci. The polysaccharide vaccine PPSV23 protects against 23 types of pneumococci. 