Zero-dose children and the immunisation cascade: Understanding immunisation pathways in low and middle-income countries.

ABSTRACT:

Introduction

Zero-dose prevalence refers to children who failed to receive any routine vaccination. Little is known about the "immunisation cascade" in low- and middle-income countries (LMICs), defined as how children move from zero dose to full immunisation.

Methods

Using data from national surveys carried out in 92 LMICs since 2010 and focusing on the four basic vaccines delivered in infancy (BCG, polio, DPT and MCV), we describe zero-dose prevalence and the immunisation cascade in children aged 12 to 23 months. We also describe the most frequent combinations of vaccines (or co-coverage) among children who are partially immunized. Analyses are stratified by country income groups, household wealth quintiles derived from asset indices, sex of the child and area of residence.

SUBMITTER: Cata-Preta BO 

PROVIDER: S-EPMC8314014 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature