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Fluarix Quadrivalent® Influenza Virus Vaccine

Protein Sciences Corporation · Phase 3 active Biologic

Fluarix Quadrivalent® Influenza Virus Vaccine is a Inactivated influenza vaccine Biologic drug developed by Protein Sciences Corporation. It is currently in Phase 3 development for Seasonal influenza prevention in adults and children ≥6 months of age.

Fluarix Quadrivalent stimulates the immune system to produce antibodies against four strains of influenza virus, providing protection against seasonal flu infection.

Fluarix Quadrivalent stimulates the immune system to produce antibodies against four strains of influenza virus, providing protection against seasonal flu infection. Used for Seasonal influenza prevention in adults and children ≥6 months of age.

At a glance

Generic nameFluarix Quadrivalent® Influenza Virus Vaccine
SponsorProtein Sciences Corporation
Drug classInactivated influenza vaccine
ModalityBiologic
Therapeutic areaImmunology
PhasePhase 3

Mechanism of action

This inactivated influenza vaccine contains antigens from four influenza virus strains (two A subtypes and two B lineages) that trigger both humoral and cellular immune responses. Upon vaccination, the body produces strain-specific antibodies and memory B cells that recognize and neutralize circulating influenza viruses, reducing infection risk and severity.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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Frequently asked questions about Fluarix Quadrivalent® Influenza Virus Vaccine

What is Fluarix Quadrivalent® Influenza Virus Vaccine?

Fluarix Quadrivalent® Influenza Virus Vaccine is a Inactivated influenza vaccine drug developed by Protein Sciences Corporation, indicated for Seasonal influenza prevention in adults and children ≥6 months of age.

How does Fluarix Quadrivalent® Influenza Virus Vaccine work?

Fluarix Quadrivalent stimulates the immune system to produce antibodies against four strains of influenza virus, providing protection against seasonal flu infection.

What is Fluarix Quadrivalent® Influenza Virus Vaccine used for?

Fluarix Quadrivalent® Influenza Virus Vaccine is indicated for Seasonal influenza prevention in adults and children ≥6 months of age.

Who makes Fluarix Quadrivalent® Influenza Virus Vaccine?

Fluarix Quadrivalent® Influenza Virus Vaccine is developed by Protein Sciences Corporation (see full Protein Sciences Corporation pipeline at /company/protein-sciences-corporation).

What drug class is Fluarix Quadrivalent® Influenza Virus Vaccine in?

Fluarix Quadrivalent® Influenza Virus Vaccine belongs to the Inactivated influenza vaccine class. See all Inactivated influenza vaccine drugs at /class/inactivated-influenza-vaccine.

What development phase is Fluarix Quadrivalent® Influenza Virus Vaccine in?

Fluarix Quadrivalent® Influenza Virus Vaccine is in Phase 3.

What are the side effects of Fluarix Quadrivalent® Influenza Virus Vaccine?

Common side effects of Fluarix Quadrivalent® Influenza Virus Vaccine include Injection site soreness, Injection site erythema, Injection site swelling, Myalgia, Headache, Fatigue.

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