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Influenza Vaccine

Published: July 26, 2026Updated: September 2, 2026

Audenz is an adjuvanted vaccine designed to protect against H5N1 influenza (avian flu). It is specifically formulated for pandemic preparedness and is intended for use in adults 18 years of age and older when there is an outbreak or high risk of H5N1 infection. This vaccine helps the immune system develop protection against the potentially severe respiratory illness caused by the H5N1 virus.

Quick summary

Audenz is an adjuvanted H5N1 influenza vaccine for pandemic preparedness in adults.

Medically reviewed by WellAlly Editorial TeamLast reviewed September 2, 2026Editorial policy

Key facts at a glance

RxNorm
2694012
Generic
Audenz
Class
brand-name
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.

Audenz is used to prevent influenza disease caused by the H5N1 subtype of influenza A virus. It is approved for active immunization against H5N1 in adults 18 years and older and is intended for use during pandemic situations or outbreak preparedness.

Audenz is an adjuvanted vaccine that stimulates the immune system to produce antibodies against the H5N1 virus. The adjuvant enhances the body's immune response to the antigen, potentially allowing for a lower dose of antigen while still achieving protective immunity.

Audenz is administered as a 2-dose series. Common side effects may include injection site reactions, headache, fatigue, and muscle aches. As with all vaccines, there is a risk of allergic reactions. This vaccine does not protect against other influenza strains such as seasonal H1N1 or H3N2.

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.

Medical Disclaimer

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 September 2, 2026. · Read our editorial policy