Measles Second Dose Vaccine Uptake and Determinants among 15–23 Month Old Children at Bahir Dar, Northwest Ethiopia

Background aim: Measles is a highly infectious disease and can cause lifelong complications and death. Most studies focused on children who received a first dose measles vaccine rather than second doses. Therefore, this study aimed to determine second dose measles vaccine uptake proportion and its associated factors among children aged 15–23 months in Bahir Dar, Northwest Ethiopia.Methods: A community-based cross-sectional study was employed from September 20 to November 25, 2022. A multi-stage cluster sampling technique was applied to select 633 children aged 15 to 23 months. Data were collected through face-to-face interviews using a structured questionnaires. Data were entered into Epidata version 3.1 and univariate and multivariate binary logistic regressions were carried out.Results: The study revealed that the proportion of second dose measles vaccine uptake was 53.08%. Having parents who were primary guardians (AOR=1.54,CI,95%(1.05, 2.27), antenatal care visit (AOR=1.97 CI, 95%(1.26, 3.07), child delivery at health facility (AOR=1.66, 95%CI: 1.14, 2.42), no child illness in previous vaccination time (AOR=1.53, 95%CI: 1.07, 2.18), and no long waiting time at the vaccination site (AOR= 2.54, 95%CI: 1.05, 2.21) were identified as determinants of measles second dose vaccine uptake. Conclusion: The measles-containing second-dose vaccine uptake was low. Children with parents as primary guardians, having antenatal care follow-up, health facility child delivery, absence of child illness during previous vaccination, and short waiting time were determinants. The findings suggests that increasing maternal antenatal care visits and encouraging women to give birth in a health institution would increase MCV2 vaccine uptake.