Reduced protective efficacy of hepatitis B vaccine among fully vaccinated children in Ethiopia.

Background: Hepatitis B vaccination is recommended for all children at birth within 24 hours or during childhood.

Objective: This study was aimed to evaluate protective efficacy of hepatitis B vaccine and estimate the sero-prevalence of hepatitis B virus infection among vaccinated children.

Materials And Methods: A community-based cross-sectional study was conducted from March, 2021 to October, 2021 in Debre Markos town.