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Phase 2 N=227 Randomized Triple-blind Prevention

Higher Dose Intradermal H5 Vaccine

Influenza

Enrolled (actual)
227
Serious AEs
1.8%
Results posted
May 2009
Primary outcome: Primary: Number of Participants Achieving a 4-fold or Greater Increase in HAI Antibody Titers After Dose 2 — 47; 40 Participants

Study Design & Population

Study type
Interventional
Phase
Phase 2
Interventions
Inactivated Influenza A Vaccine A/H5N1 (Biological); Placebo (IM) (Drug); Placebo (ID) (Drug)
Age
Adult · 18+ yrs
Sex
All
Sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
Primary completion
Feb 2008

Outcome Measures

OutcomeResultp-value
PRIMARY
Number of Participants Achieving a 4-fold or Greater Increase in HAI Antibody Titers After Dose 2
47; 40
PRIMARY
Number of Participants Spontaneously Reporting Any Serious Adverse Event.
2; 2
PRIMARY
Occurrence of Unsolicited Symptoms During a 28-day Surveillance Period Following Vaccinations at Days 0 and 28.
39; 26
PRIMARY
Occurrence of Solicited Systemic Symptoms During a 7-day Surveillance Period (Systematically Collected) Following Vaccinations at Days 0 and 28.
2; 2; 11; 14; 40; 39
PRIMARY
Occurrence of Solicited Local Symptoms During a 7-day Surveillance Period (Systematically Collected) Following Vaccinations at Days 0 and 28.
23; 61; 93; 91; 95; 8
SECONDARY
HAI Geometric Mean Titer (GMT) After Dose 2
25.2; 18.1
SECONDARY
Number of Participants Achieving a HAI Titer of Greater Than or Equal to 40 After Dose 2
48; 40
SECONDARY
Number of Participants Achieving a 4-fold or Greater Increase in HAI Antibody Titers After Dose 1.
25; 29
SECONDARY
HAI GMT After Dose 1
13.1; 11.9
SECONDARY
Number of Participants Achieving a Serum HAI Titer of Greater Than or Equal to 40 After Dose 1.
26; 29
SECONDARY
Number of Participants Achieving a 4-fold or Greater Increase in HAI Antibody Titers 7 Months After Dose 1.
17; 16
SECONDARY
HAI GMT at 7 Months After Dose 1
10.0; 8.9
SECONDARY
Number of Participants Achieving a Serum HAI Titer of Greater Than or Equal to 40 at 7 Months After Dose 1.
20; 16

Summary

This study will compare the influenza A/H5N1 virus vaccine given by injection in the muscle versus injection in the skin in healthy adults. The study will look at the safety of the injections, how the body reacts, and what the body's immune response does when the vaccine is given in the muscle versus in the skin. The study will look at 226 healthy volunteers, ages 18-49 years old. Study procedures will include getting 2 doses of vaccine 28 days apart, physical exams, follow-up clinic visits to check the places on the body where each vaccine was given, and blood sample collections. Volunteers will complete a memory aid by writing down temperatures and health changes for 7 days after each vaccination. Volunteers will be involved in the study for up to 241 days.

Eligibility Criteria

Inclusion Criteria

  • Male or non-pregnant female between the ages of 18 and 49 years, inclusive.
  • Women of childbearing potential (not surgically sterile or post menopausal for greater than or equal to 1 year) must agree to practice adequate contraception (i.e., barrier method, abstinence, intrauterine devices, or licensed hormonal methods) for the entire study period.
  • Is in good health, as determined by vital signs (heart rate less than 100 beats per minute; blood pressure: systolic less than or equal to 140 mm Hg and greater than or equal to 90 mm Hg; diastolic less than or equal to 90 mm Hg; oral temperature less than 100.0 degrees Fahrenheit), medical history to ensure stable medical condition (see definition below) and a targeted physical examination based on medical history.

Stable medical condition - no recent change in prescription medication, dose, or frequency of medication in the last 3 months and health outcomes of the specific disease are considered to be within acceptable limits in the last 6 months. Any change that is due to change of health care provider, insurance company, etc, or is done for financial reasons, as long as in the same class of medication, will not be considered a violation of the inclusion criterion. Any change to prescription medication due to improvement of a disease outcome will not be considered a violation of the inclusion criterion.

  • Able to understand and comply with planned study procedures.
  • Provides written informed consent prior to initiation of any study procedures.

Exclusion Criteria

  • Has a known allergy to eggs or other components of the vaccine.
  • Has a positive urine or serum pregnancy test prior to vaccination (if female of childbearing potential), is breastfeeding, or has the intention to become pregnant during the study period.
  • Immunosuppression as a result of an underlying illness or treatment, or use of anti-cancer chemotherapy or radiation therapy within the preceding 36 months.
  • Has an active neoplastic disease or a history of any hematologic malignancy.
  • Long term use of oral or parenteral steroids, high-dose inhaled steroids (greater than 800 mcg/day of beclomethasone dipropionate or equivalent) within the preceding 6 months (nasal and topical steroids are allowed).
  • Has a history of receiving immunoglobulin or other blood product within the 3 months prior to vaccination in this study.
  • Has a diagnosis of schizophrenia, Bi-polar disease or other major psychiatric diagnosis.
  • Has been hospitalized for psychiatric illness, history of suicide attempt or confinement for danger to self or others.
  • Is receiving psychiatric drugs (aripiprazole, clozapine, ziprasidone, haloperidol, molindone, loxapine, thioridazine, thiothixene, pimozide, fluphenazine, risperidone, mesoridazine, quetiapine, trifluoperazine, trifluopromazine, chlorprothixene, chlorpromazine, perphenazine, olanzapine, carbamazepine, divalproex sodium, lithium carbonate or lithium citrate). Subjects who are receiving a single antidepressant drug and are stable for at least 3 months prior to enrollment, without de-compensating symptoms will be allowed to be enrolled in the study.
  • Has received any other licensed vaccines within 2 weeks (for inactivated vaccines) or 4 weeks (for live vaccines) prior to vaccination in this study.
  • Has an acute or chronic medical condition that, in the opinion of the investigator, would render vaccination unsafe or would interfere with the evaluation of responses (this includes, but is not limited to: known chronic liver disease, significant renal disease, unstable or progressive neurological disorders, diabetes mellitus, and transplant recipients).
  • Has a history of severe reactions following immunization with contemporary influenza virus vaccines.
  • Has a moderate to severe acute illness and/or an oral temperature greater than 100.4 degrees Fahrenheit, within 1 week of vaccination.
  • Known active human immunodeficiency virus, hepatitis B, or hepatitis C infec
View full record on ClinicalTrials.gov →

Data sourced from ClinicalTrials.gov (NCT00439335). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.

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