Factors Influencing Utilisation of Immunisation Services among Children Under Five Years in Lira Municipality Lira District Northern Uganda

This study investigated the factors influencing the utilization of immunization services among children under 5 years in Lira Municipality, Lira district, Northern Uganda. Utilizing a community-based cross-sectional design with quantitative data collection methods, 380 mother-infant pairs were randomly selected from residents of Lira Municipality. Univariate, bivariate, and multivariate logistic regression analyses were conducted using STATA software version 14.0 to identify significant factors affecting immunization service utilization. The study found that 77.63% (295/380) of children under 5 years utilized immunization services, with the highest utilization observed among male children (82.71%). Factors significantly influencing utilization included mothers' education level (aOR 7.46, 95%CI 2.17 – 25.65, P=0.001), religion (Muslims vs. Christians: aOR 0.15, 95%CI 0.07 – 0.32, P<0.001), rudeness of health workers (aOR 3.50, 95%CI 1.73 – 7.06, P<0.001), awareness of subsequent immunization schedules (aOR 0.38, 95%CI 0.20 – 0.70, P=0.002), possession of a child immunization card (aOR 0.34, 95%CI 0.19 – 0.63, P=0.001), and understaffing at health facilities (aOR 2.87, 95%CI 1.43 – 5.78, P=0.003). The study highlights the importance of addressing these factors to improve immunization coverage, which currently falls below the global target recommended by WHO and UNICEF. Keywords: Immunization services, Children, Under-Vaccinated, Unvaccinated, Mothers, No versus Yes.