Streptococcus Pneumoniae Type 5 Capsular Polysaccharide Antigen
Streptococcus Pneumoniae Type 5 Capsular Polysaccharide Antigen is a purified bacterial component used as an ingredient in pneumococcal vaccines. It stimulates the immune system to produce protective antibodies against pneumococcal infections caused by serotype 5 strains. This antigen is typically found in polysaccharide or conjugate vaccines designed to prevent serious pneumococcal diseases.
A bacterial antigen component used in vaccines to protect against Streptococcus pneumoniae serotype 5 infections.
Key facts at a glance
- RxNorm
- 854964
- Generic
- Streptococcus Pneumoniae Type 5 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.
Used as a vaccine component to help prevent invasive pneumococcal disease, pneumonia, meningitis, and other serious infections caused by Streptococcus pneumoniae serotype 5, particularly in high-risk populations such as infants, elderly individuals, and those with compromised immune systems.
The capsular polysaccharide antigen stimulates the immune system to recognize and produce specific antibodies against the pneumococcal serotype 5 capsule. These antibodies help the body fight off actual pneumococcal infections by marking the bacteria for destruction by immune cells.
This antigen is a vaccine component, not a standalone treatment. As part of combination vaccines, it is administered by healthcare professionals. Vaccine recipients should discuss complete vaccination schedules and any history of severe allergic reactions to vaccine components with their provider. Common side effects may include injection site reactions, fever, or mild irritability.
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