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Pandemic Influenza Vaccine

Phase 3

Influenza A Subtype H5N1 Infection | Vaccine | Infectious Disease |Altimmune, Inc.|Trials Updated: May 29, 2025

Pandemic Influenza Vaccine development status

Highest phase Phase 3 run by Novartis (NCT00434733)
Phase scored for ALTPhase 1
Registered trials 2 across 2 sponsors since Feb 2007

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment48

FDA Designations

No designations recorded

Pandemic Influenza Vaccine clinical trials

Pandemic Influenza Vaccine · 1 trial · 1 indication

Phase 1 1
NCT00755703Safety and Immunogenicity Study of Adenovirus-vectored, Intranasal Pandemic Influenza Vaccine.Influenza A Subtype H5N1 Infection
COMPLETED48 Analytics
PHASE1COMPLETED
Safety and Immunogenicity Study of Adenovirus-vectored, Intranasal Pandemic Influenza Vaccine.
Influenza A Subtype H5N1 InfectionUnlock trial analytics

Study Endpoints

Primary Endpoints

To assess the safety of a nasally administered adenovirus-vectored pandemic influenza vaccine in healthy human adults.
56 day observations with 2 year follow-up

Secondary Endpoints

Determination of immunogenicity and correlates of protection based on HI titers in vaccinates
28 days and 56 days post vaccination
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelFACTORIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Group 1EXPERIMENTALThere will be 12 subjects in Group 1 that will receive 10e8 viral particles of the Pandemic Influenza Vaccine administered via intranasal spray on day 0 and day 28 (+/- 4d).
Group 2EXPERIMENTALThere will be 12 subjects in Group 2 that will receive 10e9 viral particles of the Pandemic Influenza Vaccine administered via intranasal spray on day 0 and day 28 (+/- 4d).
Group 3EXPERIMENTALThere will be 12 subjects in Group 3 that will receive 10e10 viral particles of the Pandemic Influenza Vaccine administered via intranasal spray on day 0 and day 28 (+/- 4d).
Experimental: Group 4PLACEBO_COMPARATORThere will be 12 subjects in Group 4 that will receive a placebo consisting of buffer administered via intranasal spray on day 0 and day 28 (+/- 4d).

Interventions

NameTypeDescription
Pandemic Influenza VaccineBIOLOGICALUndetermined
PlaceboBIOLOGICAL -
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Eligibility Criteria

Age Range19 Years to 49 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Healthy males and females in good general health, 19-49 years of age * Subjects must provide written consent * Willing to participate through study completion * Willing to undergo nasal washes and swabs and provide urine and blood samples per protocol for safety and immunogeni...

Countries:United States
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Frequently asked questions about Pandemic Influenza Vaccine

What is the Pandemic Influenza Vaccine from Altimmune used for?

It is an investigational vaccine developed to protect against Influenza A Subtype H5N1 Infection, a pandemic influenza strain. It is designed for preventive immunization in healthy adults rather than for treating existing infection. The vaccine is being developed by Altimmune, Inc. and has been studied in a Phase 1 clinical trial.

Who is developing the Pandemic Influenza Vaccine?

Altimmune, Inc., which trades under the ticker ALT, is the developer of this pandemic influenza vaccine candidate. The company is responsible for its clinical development program, including the completed Phase 1 study conducted in the United States.

What phase is the Pandemic Influenza Vaccine in?

The Pandemic Influenza Vaccine is in Phase 1 clinical development. One Phase 1 trial has been completed, and no active trials are currently listed. It is an investigational product and has not been approved by the FDA for any indication.

What clinical trial has been conducted for the Pandemic Influenza Vaccine?

The vaccine has been evaluated in a single Phase 1 trial, NCT00755703, titled Safety and Immunogenicity Study of Adenovirus-vectored, Intranasal Pandemic Influenza Vaccine. The trial enrolled 48 healthy volunteers aged 19 years and older in the United States. It was randomized, double-blind, and placebo-controlled, and it is now completed.

How is the Pandemic Influenza Vaccine administered?

The Pandemic Influenza Vaccine is administered intranasally, based on the title of its completed Phase 1 trial. It is an adenovirus-vectored vaccine candidate, meaning it uses a modified adenovirus to deliver influenza genetic material. This approach is intended to stimulate an immune response against Influenza A Subtype H5N1.