drugset / Trial / NCT00169858

Long Term Immunogenicity Study of Engerix-B Vaccine in 10 Year Old Children and the Effect of Booster Injections

NCT00169858

Non-randomizedParallel-groupOpen-labelPrevention

Summary

Hepatitis B immunization has been offered to all grade 4 students (age 9-10) in the province of Quebec, using Engerix-B at a dose of 10 mkg. The peak incidence of hepatitis B occurs between age 15 and 35; the proportion of vaccinated children who will still be protected at this age is currently unknown. This study is designed to determine: * persistence of immunity until age 25 * persistence of immunological memory as demonstrated by an anamnestic response following a booster dose * the effect of a booster dose on immunogenicity at either 5, 10 or 15 years after the primary vaccination course (at age (15, 20 or 25).

Timeline

Start
1995-09
Primary completion
2011-10
Completion
2012-05

Drugs

EvaluationDrugModalityDoseRoute
Subject Engerix-B Vaccine 10 ug