Safety and Immunogenicity of an Inactivated Pandemic Influenza Vaccine

NCT ID: NCT00535665

Last Updated: 2007-11-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2

Total Enrollment

402 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-09-30

Study Completion Date

2007-11-30

Brief Summary

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A single center, randomized and double-blind phase II clinical trial is to be conducted in adults to evaluate the safety and immunogenicity of an inactivated pandemic influenza vaccine (whole-virion, aluminium-adjuvanted).

Detailed Description

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The vaccine to be investigated is producted in embryonated hen's eggs using an H5N1 reference strain NIBRG-14 which was prepared by NIBSC. The strain is a reassortant between A/Vietnam/1194/2004 and A/PR/8/34 by reverse genetics.

Total 400 volunteers aged from 18 to 60 years old are to be enrolled with 100 subjects in each group. The eligible volunteers will receive two doses vaccine of 5μg,10μg or 15μg haemagglutinin antigen. The schedule is day 0,14 or day 0,28. The subjects will donate their blood samples for the detection of HI antibody and microneutralization antibody. Local and systematic adverse reactions will be recorded during the study.

Conditions

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Pandemic Influenza Prevention

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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1: 10 ug, 14 days

Group Type EXPERIMENTAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

Intervention Type BIOLOGICAL

two-dose regimen with 14 days apart: 5 microgram per dose

2: 5 ug, 28 days

Group Type EXPERIMENTAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

Intervention Type BIOLOGICAL

two-dose regimen with 28 days apart: 5 microgram per dose

3: 10 ug, 28 days

Group Type EXPERIMENTAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

Intervention Type BIOLOGICAL

two-dose regimen with 28 days apart: 10 microgram per dose

4: 15 ug, 28days

Group Type EXPERIMENTAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

Intervention Type BIOLOGICAL

two-dose regimen with 28 days apart: 15 microgram per dose

Interventions

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pandemic influenza vaccine (H5N1 strain NIBRG-14)

two-dose regimen with 14 days apart: 5 microgram per dose

Intervention Type BIOLOGICAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

two-dose regimen with 28 days apart: 5 microgram per dose

Intervention Type BIOLOGICAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

two-dose regimen with 28 days apart: 10 microgram per dose

Intervention Type BIOLOGICAL

pandemic influenza vaccine (H5N1 strain NIBRG-14)

two-dose regimen with 28 days apart: 15 microgram per dose

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Healthy adults aged 18-60 years old
* Be able to show legal identity card for the sake of recruitment
* Be able to understand and sign the informed consent.

Exclusion Criteria

* Woman: Who breast-feeding or planning to become pregnant during the 56 days of study participation
* Any history of allergic reactions was allergic to any component of the vaccine, such as eggs or ovalbumin;
* Any history of severe adverse reactions to vaccines, such as anaphylaxis, hives, respiratory difficulty, angioedema, or abdominal pain
* Autoimmune disease or immunodeficiency
* Asthma that is unstable or required emergent care, hospitalization or intubation during the past two years or that required the use of oral or intravenous corticosteroids
* Diabetes mellitus (type I or II), with the exception of gestational diabetes
* History of thyroidectomy or thyroid disease that required medication within the past 12 months
* Serious angioedema episodes within the previous 3 years or requiring medication in the previous two years
* Hypertension that was not well controlled by medication or is more than 145/95 mmHg at enrollment
* Bleeding disorder diagnosed by a doctor (e.g. factor deficiency, coagulopathy, or platelet disorder requiring special precautions) or significant bruising or bleeding difficulties with IM injections or blood draws
* Active malignancy or treated malignancy for which there is not reasonable assurance of sustained cure or malignancy that is likely to recur during the period of study
* Seizure disorder other than:

1. Febrile seizures under the age of two years old,
2. Seizures secondary to alcohol withdrawal more than 3 years ago, or
3. A singular seizure not requiring treatment within the last 3 years
* Asplenia, functional asplenia or any condition resulting in the absence or removal o the spleen
* Guillain-Barre Syndrome
* Women subjects with positive urinary pregnancy test
* Any history of immunosuppressive medications or cytotoxic medications or inhaled corticosteroids within the past six months (with the exception of corticosteroid nasal spray for allergic rhinitis or topical corticosteroids for an acute uncomplicated dermatitis)
* History of any blood products administration within 3 months before the dosing
* Administration of any other investigational research agents within 30 days before the dosing
* Administration of any live attenuated vaccine within 30 days before the dosing
* Administration of subunit or inactivated vaccines, e.g. pneumococcal vaccine, or allergy treatment with antigen injections, within 14 days before the dosing
* Be receiving anti-TB prophylaxis or therapy currently
* Axillary temperature \>37.0 centigrade at the time of dosing
* Psychiatric condition that precludes compliance with the protocol; past or present psychoses; past or present bipolar disorder requiring therapy that has not been well controlled on medication for the past two years; disorder requiring lithium; or suicidal ideation occurring within five years prior to enrollment
* Any medical, psychiatric, social condition, occupational reason or other responsibility that, in the judgment of the investigator, is a contraindication to protocol participation or impairs a volunteer's ability to give informed consent.
Minimum Eligible Age

18 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Centers for Disease Control and Prevention, China

OTHER_GOV

Sponsor Role collaborator

Sinovac Biotech Co., Ltd

INDUSTRY

Sponsor Role lead

Principal Investigators

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Jiang Wu

Role: PRINCIPAL_INVESTIGATOR

Beijing Centers for Diseases Control and Prevention

References

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Wu J, Fang HH, Chen JT, Zhou JC, Feng ZJ, Li CG, Qiu YZ, Liu Y, Lu M, Liu LY, Dong SS, Gao Q, Zhang XM, Wang N, Yin WD, Dong XP. Immunogenicity, safety, and cross-reactivity of an inactivated, adjuvanted, prototype pandemic influenza (H5N1) vaccine: a phase II, double-blind, randomized trial. Clin Infect Dis. 2009 Apr 15;48(8):1087-95. doi: 10.1086/597401.

Reference Type DERIVED
PMID: 19281330 (View on PubMed)

Other Identifiers

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PRO-PanFlu-2001

Identifier Type: -

Identifier Source: org_study_id