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Immunogenicity of inactivated vero cell culture-derived Japanese encephalitis vaccine in children and adolescents after hematopoietic stem cell transplantation

Immunogenicity of inactivated vero cell culture-derived Japanese encephalitis vaccine in children and adolescents after hematopoietic stem cell transplantation

Status
Active, not recruiting
Phases
Phase 4
Study type
Interventional
Source
TCTR
Registry ID
TCTR20191104001
Enrollment
Unknown
Registered
2019-11-04
Start date
2016-01-15
Completion date
Unknown
Last updated
2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Japanese encephalitis Japanese encephalitis vaccine Hematopoietic stem cell transplantation

Interventions

inactivated vero cell culture&#45
derived JE vaccine (Beijing P3) 0.5 mL subcutaneous injection 3 doses [2 dose of primary series and 1 booster dose]
Experimental Drug
inactivated Vero cell culture&#45
derived JE vaccine (JEVAC)

Sponsors

Faculty of Medicine Ramathibodi Hospital, Mahidol University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
No minimum to 25 Years

Inclusion criteria

Inclusion criteria: Patients who had finished their hematopoietic stem cell transplantation for more than 1 year

Exclusion criteria

Exclusion criteria: No immunosuppressive therapy at least 6 months before enrollment No evidence of acute or chronic graft versus host disease at the time of enrollment

Design outcomes

Primary

MeasureTime frame
Seroconversion rate at 1 month after primary series of revaccination and 1 month after booster dose Antibody level against JE virus using plaque reduction neutralization test

Secondary

MeasureTime frame
Adverse event after each dose of vaccine Observation and telephone call,Increment of JE specific T lymphocyte at 1 month after primary series of revaccination and 1 month after booster dose Number of JE specific T lymphocyte usinf interferon gamma releasing assay

Countries

Thailand

Contacts

Public ContactSurapat Assawawiroonhakarn

Faculty of Medicine Ramathibodi Hospital, Mahidol University

surp_as@hotmail.com+66899604224

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026