Accès ouvert

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

Article scientifique 2023 Anglais

Résumé

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. A simple random sampling technique was used to select 165 fully vaccinated children aged 5-12 years old. A serum sample was used to determine hepatitis B surface antigen (HBsAg), anti-hepatitis B core antibody (anti-HBc), anti-hepatitis B surface antibody titer (anti-HBs) using ELISA. RESULTS: The seroprevalence of HBsAg and anti-HBc anti-body was found to be 4.2% and 4.8% respectively. Of 165 fully vaccinated children, 129 (78.2%) had anti-HBs titer ≥ 10 mIU/ml. Among 129 sero-protected children, 76 (58.9%) were hypo-responders whereas the rest 53 (41.1%) were good responders. Those children within the age group of 5-7 years were 2.9 times (AOR: 2.873, 95% CI: 1.156, 7.141) (P<0.023) more likely to respond to HBV vaccine. Multivariate logistic regression revealed that children who were born from HBV positive mothers (AOR 3.917, 95% CI: 1.456, 5.365, P<0.027) and those who had history of injectable medications (AOR 9.232, 95% CI: 1.503, 11.697, P<0.016) were more likely to be HBsAg positive. Children who had history of hospital admission (AOR 6.973, 95% CI: 1.495, 8.530, P<0.013) were more likely to be anti-HBcAb positive. CONCLUSIONS: There was an intermediate prevalence of childhood HBV infection despite being vaccinated suggesting low protective efficacy of hepatitis B vaccine in the study area.

Citer ce document

Adugna, A., Demeke, G., Toru, M., Tsehay, D., Esmael, A., Mihret, A., Mulu, A. (2023). Reduced protective efficacy of hepatitis B vaccine among fully vaccinated children in Ethiopia. https://doi.org/10.1371/journal.pone.0288355

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Voir l'article sur le site de la revue

Auteur(s)

Adane Adugna Gebereselassie Demeke Milkiyas Toru Dareskedar Tsehay Ahmed Esmael Adane Mihret Andargachew Mulu

Statistiques

Consultations : 1

Téléchargements : 0