NCT00311675

Brief Summary

The purpose of this study is to see how antibodies (proteins that fight infection) are made after you receive the new H5N1 flu vaccine. The new H5N1 vaccine will be given to 50 healthy adult lab workers, aged 18 years and older. Subjects will receive two 90mcg injections (shots in the arm) of the vaccine about 1 month apart. Subjects will maintain a memory aid to record oral temperature and any response to the vaccine for 7 days after each immunization. Subjects will be contacted by telephone 1 to 3 days after vaccination. They will return to the clinic on Day 7. Blood will be drawn before each vaccination and on Days 56 and 180. Subjects may be involved in the study for about 6 months. It is anticipated that the vaccine will provide safe protection against influenza H5N1.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
35

participants targeted

Target at P50-P75 for phase_1

Timeline
Completed

Started Apr 2006

Shorter than P25 for phase_1

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

April 1, 2006

Completed
4 days until next milestone

First Submitted

Initial submission to the registry

April 5, 2006

Completed
1 day until next milestone

First Posted

Study publicly available on registry

April 6, 2006

Completed
8 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2006

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2006

Completed
Last Updated

August 27, 2010

Status Verified

July 1, 2008

Enrollment Period

8 months

First QC Date

April 5, 2006

Last Update Submit

August 26, 2010

Conditions

Keywords

influenza, A/H5N1, vaccine

Outcome Measures

Primary Outcomes (3)

  • Adverse event (AE) or serious AE information (solicited in-clinic and via memory aids, concomitant medications, and periodic targeted physical assessment).

    1 - 3 days after each vaccination to review any AEs and SAEs; approximately 1 week after each vaccination review any AEs and collect for 28 days following the 2nd dose of vaccine. SAEs will be collected throughout the study through day 180.

  • Geometric mean titer (GMT) and frequency of 4-fold or greater increases in neutralizing antibody titers.

    28 days after receipt of 2nd dose of vaccine.

  • Geometric mean titer (GMT) and frequency of 4-fold or greater increases in serum hemagglutination inhibition (HAI) antibody titers against the influenza A/H5N1 virus.

    28 days after receipt of 2nd dose of vaccine.

Secondary Outcomes (3)

  • Geometric mean titer (GMT) and frequency of 4-fold or greater increases in neutralizing antibody titers in each group.

    1 month and 7 months after receipt of the first dose of vaccine.

  • Geometric mean titer (GMT) and frequency of 4-fold or greater increases in serum hemagglutination inhibition (HAI) antibody titers in each group.

    1 month and 7 months after receipt of the first dose of vaccine.

  • Development of serum antibody responses against antigenically drifted variants of H5N1 influenza viruses.

    Serum for immunogenicity evaluations will be obtained prior to the 1st vaccination (day 0) and prior to the 2nd vaccination (day 28), and on days 56 and 180.

Study Arms (1)

1

EXPERIMENTAL
Biological: Inactivated Influenza A/H5N1 Vaccine (sanofi pasteur)

Interventions

Monovalent subvirion H5N1 vaccine (HA of A/Vietnam/1203/04) provided in single-dose vials containing 90-mcg/mL A/H5N1 HA. Dosage is two 90 mcg doses administered intramuscularly separated by approximately 28 days.

1

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Laboratory personal with potential exposure to live H5N1 viruses.
  • Male or nonpregnant female (as indicated by a negative urine pregnancy test prior to each dose of vaccine), aged 18 years and older.
  • Women of childbearing potential who are at risk of becoming pregnant must agree to practice adequate contraception (i.e., barrier method, abstinence, and licensed hormonal methods) for the entire study period.
  • Is in good health, as determined by vital signs (pulse, blood pressure, oral temperature), medical history, and a targeted physical examination based on medical history.
  • Able to understand and comply with planned study procedures.
  • Provides informed consent prior to any study procedures and is available for all study visits.

You may not qualify if:

  • Has a known allergy to eggs or other components of the vaccine.
  • Has a known allergy or sensitivity to latex (in the stopper).
  • Has a positive urine pregnancy test prior to vaccination (if female of childbearing potential) or women who are breastfeeding.
  • Is undergoing immunosuppression as a result of an underlying illness or treatment.
  • Has an active neoplastic disease or a history of any hematologic malignancy.
  • Is using oral or parenteral steroids, high-dose inhaled steroids (\>800 mcg/day of beclomethasone dipropionate or equivalent) or other immunosuppressive or cytotoxic drugs.
  • Has a history of receiving immunoglobulin or other blood product within the 3 months prior to enrollment in this study.
  • Has an acute illness, including an oral temperature greater than 100.4 degrees F, within 1 week of vaccination.
  • Received an experimental agent (vaccine, drug, biologic, device, blood product, or medication) within 1 month prior to enrollment in this study, or expects to receive an experimental agent during the 6-month study period.
  • Has any condition that would, in the opinion of the site investigator, place the subject at an unacceptable risk of injury or render the subject unable to meet the requirements of the protocol.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

St. Jude Children's Research Hospital

Memphis, Tennessee, 31805, United States

Location

MeSH Terms

Conditions

Influenza, Human

Condition Hierarchy (Ancestors)

Respiratory Tract InfectionsInfectionsOrthomyxoviridae InfectionsRNA Virus InfectionsVirus DiseasesRespiratory Tract Diseases

Study Design

Study Type
interventional
Phase
phase 1
Allocation
NON RANDOMIZED
Masking
NONE
Purpose
PREVENTION
Intervention Model
SINGLE GROUP
Sponsor Type
NIH

Study Record Dates

First Submitted

April 5, 2006

First Posted

April 6, 2006

Study Start

April 1, 2006

Primary Completion

December 1, 2006

Study Completion

December 1, 2006

Last Updated

August 27, 2010

Record last verified: 2008-07

Locations