Assess Safety and Immunogenicity of A/H5 Inactivated Monovalent Influenza Vaccines at Different Antigen Dose Levels Adjuvanted With AS03 or MF59

NCT06560151 · Status: COMPLETED · Phase: PHASE2 · Type: INTERVENTIONAL · Enrollment: 1380

Last updated 2026-01-09

No results posted yet for this study

Summary

This BARDA-sponsored, randomized, double-blind, phase 2 study is designed to assess safety and immunogenicity of A/H5 inactivated monovalent influenza vaccines at different antigen dose levels adjuvanted with AS03 or MF59.

Conditions

Interventions

BIOLOGICAL

7.5 µg H5N8 antigen plus full dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N8 vaccine.

BIOLOGICAL

15 µg H5N8 antigen plus full dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N8 vaccine.

BIOLOGICAL

3.75 µg H5N8 antigen plus half dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N8 vaccine.

BIOLOGICAL

7.5 µg H5N8 antigen plus half dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N8 vaccine.

BIOLOGICAL

15 µg H5N8 antigen plus half dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N8 vaccine.

BIOLOGICAL

3.75 µg H5N8 antigen plus MF59

Two intramuscular doses (21 days apart) of MF59 adjuvanted H5N8 vaccine.

BIOLOGICAL

7.5 µg H5N8 antigen plus MF59

Two intramuscular doses (21 days apart) of MF59 adjuvanted H5N8 vaccine.

BIOLOGICAL

15 µg H5N8 antigen plus MF59

Two intramuscular doses (21 days apart) of MF59 adjuvanted H5N8 vaccine.

BIOLOGICAL

3.75 µg H5N1 antigen plus full dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N1 vaccine.

BIOLOGICAL

7.5 µg H5N1 antigen plus full dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N1 vaccine.

BIOLOGICAL

15 µg H5N1 antigen plus full dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N1 vaccine.

BIOLOGICAL

3.75 µg H5N1 antigen plus MF59

Two intramuscular doses (21 days apart) of MF59 adjuvanted H5N1 vaccine.

BIOLOGICAL

7.5 µg H5N1 antigen plus MF59

Two intramuscular doses (21 days apart) of MF59 adjuvanted H5N1 vaccine.

BIOLOGICAL

15 µg H5N1 antigen plus MF59

Two intramuscular doses (21 days apart) of MF59 adjuvanted H5N1 vaccine.

BIOLOGICAL

3.75 µg H5N8 antigen plus full dose AS03A

Two intramuscular doses (21 days apart) of AS03A adjuvanted H5N8 vaccine.

Sponsors & Collaborators

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
QUADRUPLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-08-21
Primary Completion
2025-01-02
Completion
2025-06-11
FDA Drug
Yes

Countries

  • United States

Study Locations

More Related Trials

Entities

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06560151 on ClinicalTrials.gov