Influenza B Virus B/Panama/45/90 Antigen
Influenza B Virus B/Panama/45/90 Antigen is a component used in the manufacture of seasonal influenza vaccines. This antigen is derived from an inactivated influenza B virus strain and is combined with other viral strains to create a comprehensive vaccine that helps protect against multiple influenza virus types. The antigen stimulates the immune system to develop protective antibodies against the influenza B/Panama lineage.
Influenza B Virus B/Panama/45/90 Antigen is a vaccine component that helps protect against influenza B virus infection when included in seasonal flu vaccines.
Key facts at a glance
- RxNorm
- 2262062
- Generic
- Influenza B Virus B/Panama/45/90 Antigen
- Class
- pin-variant
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- 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 used as a component in quadrivalent and trivalent seasonal influenza vaccines for active immunization against influenza disease caused by influenza B viruses of the B/Panama lineage. It is indicated for individuals recommended to receive annual flu vaccination.
When included in a vaccine formulation, this antigen exposes the immune system to inactivated influenza B virus antigens, stimulating the production of virus-specific antibodies. These antibodies help the body recognize and neutralize influenza B viruses if subsequently exposed, providing protective immunity against infection.
This is a vaccine antigen component, not a standalone medication. Safety and efficacy are evaluated within the complete vaccine formulation. As with all influenza vaccines, allergic reactions may occur in susceptible individuals. Administration should be performed by qualified healthcare professionals according to national immunization guidelines.
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 28, 2026. · Read our editorial policy