Title
Twinrix Alternative Schedule Study
A Study Comparing the Effectiveness of Two Different Vaccination Schedules of the Combined Hepatitis A and B Vaccine(Twinrix Adult1440/20)
Phase
Phase 4Lead Sponsor
IDEWE Occupational Health ServicesStudy Type
InterventionalStatus
Unknown statusIndication/Condition
Antibody Response After VaccinationIntervention/Treatment
hepatitis b vaccine (recombinant) hepatitis a vaccine, inactivated ...Study Participants
400To compare the efficiency of protection against hepatitis-B virus by administration of the combined vaccine against hepatitis A and B using the schedule 0-1-12 months against the schedule 0-1-6 months.
To compare the seroconversion (>= 1 IU/l) and seroprotection (>= 10 IU/l) rate at month 6,7,12 and 13.
To compare the distribution of anti-HBs at these different moments.
Inclusion Criteria: 18 years or older; a good physical condition as confirmed by history and physical examination at entry of the study; for female participants who could become pregnant in the course of the study a contraceptive programme is foreseen; all participants have provided written informed consent. Exclusion Criteria: Employees occupationally exposed to hepatitis B virus Other exclusion criteria listed for the vaccine (licensed vaccine): Each acute disease at the inclusion in the study; A history of hypersensibility to one of the components of the vaccine; Simultaneous participation in another clinical trial