MedicalTerminology DB

Meaning of pneumococcal polyvalent vaccine: An polyvalent vaccine used to prevent infection by the bacterium Streptococcus pneumoniae.

Definition of pneumococcal polyvalent vaccine

An polyvalent vaccine used to prevent infection by the bacterium Streptococcus pneumoniae. Pneumococcal polyvalent vaccine contains higly purified capsular antigens from the 23 most prevalent or invasive pneumococcal types of Streptococcus pneumoniae to ensure cross-protection. Following vaccination, protective capsular type-specificantibody levels typically develop by the third week; serotype-specific antibody levels generally decline after 5-10 years.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.