A randomised trial of hepatitis B booster vaccination at the age of 13 to 15 years following infant vaccination to assess efficacy against hepatitis B infection and acute hepatitis

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN71271385

Enrollment

500

Registered

2000-09-21

Start date

2004-01-01

Completion date

Unknown

Last updated

2015-01-13

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

Conditions

Hepatitis B Virus Infections and Infestations Hepatitis B

Interventions

Added as of 23/04/2007: Booster dose HBV vaccine

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Added as of 23/04/2007: 1. ID and vaccination data matched with Gambia Hepatitis Intervention Study (GHIS) database 2. Born between 1/7/1988 and 31/12/1989 3. Living in selected Health Centre (HC) catchment area's 4. Informed consent participant and parent/guardian

Exclusion criteria

Exclusion criteria: Added as of 23/04/2007: 1. No complete informed consent 2. No match found 3. Not fully vaccinated in infancy 4. Not in age range

Design outcomes

Primary

Measure	Time frame
Added as of 23/04/2007: Anti-HBs titers after one year.	—

Secondary

Measure	Time frame
Added as of 23/04/2007: Proportion without anamnestic response following boosting.	—

Countries

Gambia

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Apr 7, 2026