Neisseria Meningitidis Serogroup W-135 Conjugate Vaccine
This vaccine provides protection against Neisseria meningitidis serogroup W-135, a bacterial pathogen that causes serious and potentially fatal infections including meningitis and septicemia. The conjugate formulation, which links polysaccharide antigens to diphtheria toxoid protein, enhances immune response particularly in younger age groups compared to polysaccharide-only vaccines.
A conjugate vaccine targeting meningococcal serogroup W-135 bacteria to prevent serious bacterial infections.
Key facts at a glance
- RxNorm
- 797633
- Generic
- Neisseria Meningitidis Serogroup W-135 Capsular Polysaccharide Diphtheria Toxoid Protein Conjugate Vaccine
- Class
- unclassified
- Brands
- Menactra
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- prefilled syringe, injection
- 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 meningococcal disease caused by N. meningitidis serogroup W-135. Recommended for adolescents, college students, military personnel, travelers to endemic regions, and individuals with complement deficiencies or asplenia.
The vaccine contains capsular polysaccharides from serogroup W-135 conjugated to diphtheria toxoid protein. This conjugation enhances T-cell dependent immune responses, leading to improved antibody production and immunological memory compared to unconjugated polysaccharide vaccines.
Administered via intramuscular injection. Common side effects include injection site pain, redness, and mild systemic reactions. Contraindicated in individuals with known hypersensitivity to any vaccine component. Not a replacement for chemoprophylaxis in outbreak settings.
Official drug label
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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 29, 2026. · Read our editorial policy