Streptococcus Pneumoniae Type 19F Capsular Polysaccharide Antigen
Streptococcus pneumoniae Type 19F capsular polysaccharide antigen is a component used in pneumococcal conjugate vaccines. This antigen stimulates the immune system to produce protective antibodies against pneumococcal infections caused by serotype 19F, which can lead to serious diseases like pneumonia, meningitis, and bloodstream infections. It is primarily used in pediatric vaccination programs to protect young children from invasive pneumococcal disease.
A vaccine antigen component that provides immunity against Streptococcus pneumoniae serotype 19F, a bacteria causing pneumonia, meningitis, and other serious infections.
Key facts at a glance
- RxNorm
- 854948
- Generic
- Streptococcus Pneumoniae Type 19f 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, pneumonia, and otitis media caused by Streptococcus pneumoniae serotype 19F. Included as one of the serotypes in pediatric pneumococcal conjugate vaccines (PCV) recommended for routine childhood immunization.
The capsular polysaccharide antigen triggers an immune response by stimulating B lymphocytes to produce serotype-specific antibodies. When conjugated to a carrier protein (such as diphtheria toxoid or CRM197), it enhances immunogenicity in young children by promoting T-cell dependent responses, leading to stronger and longer-lasting immunity.
This is a vaccine antigen component, not a standalone medication. Effectiveness depends on inclusion in a complete vaccine formulation. Common side effects of vaccines containing this antigen include injection site reactions, fever, and irritability. Contraindications vary based on the complete vaccine product. Consult current immunization guidelines and healthcare providers for specific recommendations.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
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