Streptococcus Pneumoniae Type 15B Capsular Polysaccharide Antigen
Streptococcus Pneumoniae Type 15b Capsular Polysaccharide Antigen is a vaccine component that targets one of the many pneumococcal serotypes capable of causing serious bacterial infections. It is used as part of broader pneumococcal conjugate or polysaccharide vaccines to induce protective immunity against invasive pneumococcal disease caused by serotype 15b.
This antigen is a component of pneumococcal vaccines that stimulates immune protection against infections caused by Streptococcus pneumoniae serotype 15b.
Key facts at a glance
- RxNorm
- 854940
- Generic
- Streptococcus Pneumoniae Type 15b Capsular Polysaccharide Antigen
- Class
- unclassified
- Brands
- Pneumovax 23
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- prefilled syringe, injection, solution
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
This antigen is included in pneumococcal vaccines to help prevent invasive pneumococcal disease (such as meningitis, bacteremia, and sepsis), pneumonia, and otitis media caused by Streptococcus pneumoniae serotype 15b. It is primarily used in pediatric and adult immunization programs.
The capsular polysaccharide antigen stimulates the immune system to produce type-specific antibodies against S. pneumoniae serotype 15b. When conjugated to a carrier protein, it enhances T-cell dependent immune responses, leading to better immunological memory and protection, particularly in young children.
This is a passive immunogen component rather than an active drug. As with all vaccines, effectiveness depends on individual immune response. Common vaccine components may include multiple serotypes. Safety and appropriateness should be determined by healthcare providers based on patient age, risk factors, and vaccination history. Not a treatment for active infection.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 31, 2026. · Read our editorial policy