Immunogenicity and Safety of Japanese Encephalitis Chimeric Virus Vaccine (JE CV) Concomitantly Administered With Measles, Mumps, and Rubella (MMR) Vaccine in Toddlers in Taiwan.

NCT01188343 Phase 3 COMPLETED Results posted

This study is designed to compare the immunogenicity of Japanese encephalitis chimeric virus vaccine (JE-CV) and measles-mumps-rubella (MMR)vaccine when given together or when given at separate visits 6 weeks apart in toddlers aged 12 to 18 months. Primary objective: * To demonstrate the non-inferiority of the antibody responses in terms of seroconversion of the concomitant administration of JE-CV and MMR compared to the antibody responses after the single administration of JE-CV and MMR vaccine. Secondary objectives: * To describe the immune response to JE CV and MMR before and after one dose of JE CV and MMR vaccine, respectively. * To describe the safety of a single dose of JE-CV and MMR vaccine (given separately at a 6-week interval and the safety of the concomitant administration of JE-CV and MMR vaccine in all subjects up to 6 months after last vaccination.

Details

Lead sponsor	Sanofi Pasteur, a Sanofi Company
Phase	Phase 3
Status	COMPLETED
Enrolment	542
Start date	2010-08
Completion	2012-12

Conditions

• Japanese Encephalitis
• Measles
• Mumps
• Rubella

Interventions

• Japanese encephalitis chimeric virus: Measles, mumps, and rubella live attenuated virus
• Japanese encephalitis chimeric virus: Measles, mumps, and rubella live attenuated virus
• Japanese encephalitis chimeric virus: Measles, mumps, and rubella live attenuated virus

Primary outcomes

• Percentage of Participants With Seroconversion to Vaccine Antigens Following Concomitant Administration of Japanese Encephalitis Chimeric Virus Vaccine (JECV) and MMR or Single Administration of JE-CV and MMR Vaccine at 42 Days Following First Vaccination — Day 0 (pre-vaccination) and Day 42 post-vaccination
  JE-CV antigens were measured using a 50% plaque reduction neutralization test (PRNT50); MMR antigens were measured using enzyme linked immunosorbent assay (ELISA). Seroconversion was defined as: for JE-CV - participants with a pre-vaccination titer \<1/10 and post-vaccination titer ≥1/10, or a pre-vaccination titer ≥1/10 and 4-fold increase from pre- to post; for Measles - post-vaccination titer ≥120 mIU/ml, when pre-vaccination titer is \<120 mIU/ml; for Mumps - post-vaccination titer ≥1/10 U/ml when pre-vaccination titer is \<10 U/ml; and for Rubella, post-vaccination titer ≥1/10 U/ml when pre-vaccination titer is \<10 U/ml.

Countries

Taiwan