Streptococcus Pneumoniae Type 22F Capsular Polysaccharide Antigen
Streptococcus Pneumoniae Type 22f Capsular Polysaccharide Antigen is a bacterial antigen component used in pneumococcal vaccines to stimulate protective immunity against infections caused by S. pneumoniae serotype 22f. This antigen is typically included in polyvalent pneumococcal polysaccharide or conjugate vaccines designed to prevent invasive pneumococcal diseases.
A bacterial capsular polysaccharide antigen used in vaccines to protect against pneumococcal disease caused by serotype 22f.
Key facts at a glance
- RxNorm
- 854954
- Generic
- Streptococcus Pneumoniae Type 22f 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.
Prevention of invasive pneumococcal disease, including pneumonia, meningitis, bacteremia, and otitis media caused by Streptococcus pneumoniae serotype 22f. Commonly included as one component in polyvalent pneumococcal vaccines.
The capsular polysaccharide antigen stimulates the immune system to produce type-specific antibodies against serotype 22f. In conjugate vaccines, the polysaccharide is conjugated to a carrier protein to enhance immunogenicity, particularly in young children, leading to memory B-cell formation and long-lasting immunity.
This is a vaccine antigen component, not a therapeutic drug. Contraindicated in individuals with known hypersensitivity to the antigen or vaccine components. Vaccine effectiveness varies by age group and immunocompetence. Part of a multi-valent vaccine rather than used as a standalone product.
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