[Assessment of vaccination status and booster vaccinations in adolescents attending school in Libreville, Gabon].

Introduction: Vaccination is targeted to selected adolescents and their vaccination status is little known. The purpose of this study is to assess the vaccination status and to identify factors associated with vaccination compliance in adolescents attending school in Libreville.

Methods: A cross sectional observational descriptive survey was conducted among students attending grades 6 at the Leon Mba high school in Libreville.

Results: In total, 304 students were included in the study. The average age of students was 11.60±1.20 years and sex ratio was 0.6. Two hundred and sixty-six children (87.5%) lived with their parent (father and/or mother). The average number of children per family was 4. Immunization coverage rate was 78.3%. The number of children per family was not associated with vaccine coverage of Expanded Program on Immunization (EPI) vaccines (p=0.088) while children living with at least one of their parents had a better immunization coverage for EPI vaccines (p=0.025) and vaccines outside EPI (p=0.035) respectively. Factors reported by parents to explain reasons for non-vaccination were the lack of information (30.59%), forgetfulness (24.67%) and the lack of financial resources (12.82%).

Conclusion: Vaccination coverage for adolescents attending school in Libreville appears to be relatively close to the goals of EPI, but it is still associated with family situation. Other awareness campaigns would be useful to improve vaccination coverage in Gabon.