Study of Live Attenuated Japanese Encephalitis Vaccine (ChimeriVax™-JE) and Yellow Fever Vaccine (STAMARIL®)
- Conditions
- Japanese EncephalitisYellow Fever
- Registration Number
- NCT00982137
- Lead Sponsor
- Sanofi
- Brief Summary
The purpose of this study is to obtain safety, tolerability, and immunogenicity data on the co-administration or sequential administration of Chimeravax™-JE vaccine and STAMARIL®.
Objectives:
Safety:
* Obtain safety and tolerability data of a single, fixed dose of ChimeriVax™-JE administered concurrently, one month before or one month after STAMARIL® to adult volunteers (≥ 18 to ≤ 55 years) without prior Japanese encephalitis (JE) or yellow fever (YF) vaccination.
Immunogenicity:
* Obtain data on the antibody response to a single, fixed dose of ChimeriVax™-JE administered concurrently, one month before or one month after STAMARIL® to adult volunteers without prior JE (or YF) vaccination.
* Assess the durability of the immune response in adult volunteers 6 months after administration of ChimeriVax™-JE and STAMARIL®.
- Detailed Description
All participants will receive two injections, one to each arm on Days 0 and 30, respectively. Immunogenicity will be tested on Days 0, 15, 30, 45, and 60, and at Month 6.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 108
Not provided
Not provided
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Primary Outcome Measures
Name Time Method Number of Participants With Japanese Encephalitis Seroconversion Following ChimeriVax™-JE or STAMARIL® Alone or the Co-administration of ChimeriVax™-JE and STAMARIL®, or Placebo Vaccination. Pre-vaccination (Day 0 or 30) and post-vaccination (Day 30 or 60) Neutralising antibody titer against homologous Japanese encephalitis (JE), yellow fever (YF), and other relevant wild type JE strains were determined using a 50% serum dilution plaque reduction neutralisation test. Seroconversion post-vaccination was defined as the appearance of neutralising antibody titer when not present at Day 0, or at least a four-fold rise in neutralising antibody titer between the pre-vaccination (Day 0) and the post-vaccination samples.
The 30 Days post-JE seroconversion is: Day 30 for Group 1 (ChimeriVax™-JE then STAMARIL®) and Group 3 (Co-administration of ChimeriVax™-JE and STAMARIL, then Diluent); Day 60 for Group 2 (STAMARIL® then ChimeriVax™-JE) and Group 4 (Diluent then Co-administration of ChimeriVax™-JE and STAMARIL).Number of Participants With Yellow Fever Seroconversion Following ChimeriVax™-JE or STAMARIL® Alone or the Co-administration of ChimeriVax™-JE and STAMARIL® or Placebo Vaccination. Pre-vaccination (Day 0 or 30) and post-vaccination (Day 30 or 60) Neutralising antibody titer against yellow fever strains was determined using a 50% serum dilution plaque reduction neutralisation test. Seroconversion at a later post vaccination timepoint ws defined as the appearance of neutralising antibody titer when not present at Day 0, or at least a four-fold rise in neutralising antibody titre between the pre-injection Day 0 and later post vaccination samples.
The Day 30 post-JE seroconversion is: Day 30 for Group 1 (ChimeriVax™-JE then STAMARIL®) and Group 3 (Co-administration of ChimeriVax™-JE and STAMARIL, then Diluent); Day 60 for Group 2 (STAMARIL® then ChimeriVax™-JE) and Group 4 (Diluent then Co-administration of ChimeriVax™-JE and STAMARIL).Number of Participants Who Seroconverted to Japanese Encephalitis 30 Days Post ChimeriVax™-JE Vaccination Day 0 (Pre-vaccination) through Day 30 post-vaccination Neutralising antibody titer against homologous JE, YF, and other relevant wild type JE strains was determined using a 50% serum dilution plaque reduction neutralisation test. Seroconversion at a later post vaccination timepoint was defined as the appearance of neutralising antibody titer when not present at Day 0, or at least a four-fold rise in neutralising antibody titer between the pre-injection Day 0 and post-vaccination samples.
Number of Participants Reporting Solicited Local and Systemic Adverse Events Post Vaccination With ChimeriVax™-JE or STAMARIL® Alone or the Co-Administration of ChimeriVax™-JE and STAMARIL®, or Placebo Day 0 up to Day 60 post-vaccination Solicited Local Adverse Events: Injection Site Pain, Erythema, Swelling, Hemorrhage, Venipuncture site Hemorrhage. Solicited Systemic Adverse Events: Fatigue, Malaise, Pyrexia, Chills, Headache, Dizziness, Myalgia, Abdominal Pain, Diarrhea, Nausea, Pharyngolaryngeal Pain.
All solicited local reactions associated with ChimeriVax™-JE are presented in Group 1, those associated with STAMARIL® in Group 2, those associated with co-administered vaccines in Group 3, and those associated with diluent in Group 4. The solicited systemic adverse events are reported according to the participants' randomized study groups.
- Secondary Outcome Measures
Name Time Method Geometric Mean Titers (GMTs) to Japanese Encephalitis (Homologous Virus) Following ChimeriVax™-JE or STAMARIL® Alone or the Co-administration of ChimeriVax™-JE and STAMARIL®, or Placebo Vaccination. Day 0 through 6 months post-vaccination Neutralising antibody titer against homologous Japanese encephalitis (JE) and other relevant wild type JE strains was determined using a 50% serum dilution plaque reduction neutralisation test.
Post-vaccination 15 (30) Days JE seroconversion is: Day 15 (30) for Group 1 (ChimeriVax™-JE then STAMARIL®) and Group 3 (Co-administration of ChimeriVax™-JE and STAMARIL, then Diluent); Day 45 (60) for Group 2 (STAMARIL® then ChimeriVax™-JE) and Group 4 (Diluent then Co-administration of ChimeriVax™-JE and STAMARIL)Geometric Mean Titers to Yellow Fever (Homologous Virus) Following ChimeriVax™-JE or STAMARIL® Alone or the Co-administration of ChimeriVax™-JE and STAMARIL®, or Placebo Day 0 through 6 months post-vaccination Neutralising antibody titer against homologous yellow fever was determined using a 50% serum dilution plaque reduction neutralisation test.
Post vaccination 15 (30) Days Yellow Fever seroconversion is: Day 15 (30) for Group 1 (ChimeriVax™-JE then STAMARIL®) and Group 3 (Co-administration of ChimeriVax™-JE and STAMARIL, then Diluent); Day 45 (60) for Group 2 (STAMARIL® then ChimeriVax™-JE) and Group 4 (Diluent then Co-administration of ChimeriVax™-JE and STAMARIL).
Related Research Topics
Explore scientific publications, clinical data analysis, treatment approaches, and expert-compiled information related to the mechanisms and outcomes of this trial. Click any topic for comprehensive research insights.