Japanese Encephalitis Clinical Trial
Official title:
Long Term Immunity and Safety Following Vaccination With the Japanese Encephalitis Vaccine IC51(IXIARO®, JESPECT®) In a Pediatric Population in Non Endemic Countries. Uncontrolled, Phase 3 Follow-up Study
Verified date | March 2020 |
Source | Valneva Austria GmbH |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The study investigates long-term immunity and safety of IC51 (IXIARO®, JESPECT®) in a pediatric population vaccinated in the parent study IC51-322.
Status | Completed |
Enrollment | 23 |
Est. completion date | September 2014 |
Est. primary completion date | October 2012 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 9 Months to 20 Years |
Eligibility |
Inclusion Criteria: - Subjects who have received two vaccinations in study IC51 322. (2) Subjects who were enrolled as part of the immunogenicity subgroup of study IC51-322. - Male or female healthy subjects aged = 9 months to < 21 years at the time of enrolment into this study. - Written informed consent by the subject, the subject's legal representative(s), according to local requirements, and written informed assent of the subject, if applicable. Exclusion Criteria: - History of or clinical manifestation of any Flavivirus disease during study IC51-322. - Vaccination against JE virus (JEV) (except with IC51) at any time prior or planned during this study. - Participation in another study with an investigational product during study IC51-322 or IC51-324. - History of or development of any immunodeficiency including post-organtransplantation after inclusion into study IC51-322. - History of or development of an autoimmune disease during study IC51-322. - Administration of chronic (defined as more than 14 days) immunosuppressants or other immune-modifying medications started during study IC51-322 up to first visit of study IC51-324. (For corticosteroids this means prednisone or equivalent at >= 0.05 mg/kg/day. Topical or inhaled steroids are allowed). - Known infection with human immunodeficiency virus (HIV), hepatitis B virus (HBV) or hepatitis C virus (HCV). - Illicit drug use and/or a history of drug or alcohol addiction and/or current drug or alcohol addiction. - Inability or unwillingness by the legal representative(s) and/or the subject (where applicable) to provide informed consent/assent and to abide by the requirements of the study. - Persons who are committed to an institution (by virtue of an order issued either by the judicial or the administrative authorities). |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
Valneva Austria GmbH |
United States, Australia, Germany,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Rate of Subjects With PRNT50 Titers of = 1:10 at Month 12 After the First IC51 Vaccination (in Study IC51-322) | Rate of subjects with PRNT50 titers of = 1:10 at Month 12 after the first IC51 vaccination (in study IC51-322) | Month 12 | |
Secondary | GMT for JEV Neutralizing Antibodies Measured Using the PRNT at Month 12, 24 and 36 After the First IC51 Vaccination (in Study IC51-322) | GMT for JEV neutralizing antibodies measured using the PRNT at Month 12, 24 and 36 after the first IC51 vaccination (in study IC51-322) | Month 12, 24 and 36 | |
Secondary | Rate of Subjects With PRNT50 Titers of = 1:10 at Months 24 and 36 After the First IC51 Vaccination (in Study IC51-322) | Rate of subjects with PRNT50 titers of = 1:10 at Months 24 and 36 after the first IC51 vaccination (in study IC51-322) | Month 24, 36 | |
Secondary | Rate of Subjects With SAEs Following Immunization up to Months 12, 24 and 36 After the First IC51 Vaccination (in Study IC51-322) | Rate of subjects with SAEs following immunization up to Months 12, 24 and 36 after the first IC51 vaccination (in study IC51-322) | Months 12, 24 and 36 | |
Secondary | Rate of Subjects With AEs and Medically Attended AEs up to Months 12, 24 and 36 After the First IC51 Vaccination (in Study IC51-322). | Rate of subjects with AEs and medically attended AEs up to Months 12, 24 and 36 after the first IC51 vaccination (in study IC51-322). | Months 12, 24 and 36 |
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