Last reviewed · How we verify

FluMist trivalent (2015-2016)

MedImmune LLC · FDA-approved active Biologic

FluMist is a live attenuated influenza vaccine that stimulates immune response by delivering weakened flu virus strains intranasally.

FluMist is a live attenuated influenza vaccine that stimulates immune response by delivering weakened flu virus strains intranasally. Used for Influenza prevention in children and adults aged 2-49 years.

At a glance

Generic nameFluMist trivalent (2015-2016)
SponsorMedImmune LLC
Drug classLive attenuated influenza vaccine
ModalityBiologic
Therapeutic areaImmunology
PhaseFDA-approved

Mechanism of action

The vaccine contains three live, temperature-sensitive, attenuated influenza virus strains (H1N1, H3N2, and influenza B) that replicate in the cooler upper respiratory tract but cannot replicate in the warmer lower respiratory tract. This triggers both mucosal and systemic immune responses, inducing antibody and cell-mediated immunity against the three circulating influenza strains included in the formulation for that season.

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