Individual-, family- and community-level determinants of full vaccination coverage among children aged 12-23 months in western Kenya.

To identify individual-, family-, and community-level determinants of full vaccination status at most challenging areas in Kenya, we conducted a cross-sectional study among children aged 12-23 months and their mothers. 1965 children were involved in this research and their mothers completed a questionnaire. Middle or high knowledge of vaccination schedule (Adjusted Odds Ratio (AOR)=2.69, 95%CI: 2.01-3.60 or AOR=8.12, 95%CI:5.50-11.97), medium/long birth interval or first birth (AOR=2.46, 95%CI: 1.29-4.69 or AOR=1.84, 95%CI:1.10-3.09 or AOR=2.14, 95%CI: 1.20-3.84), less than 5 children under five years old (AOR=1.39, 95%CI: 1.04-1.88) and highest community health worker's (CHWs) performance (AOR=2.20, 95%CI: 1.39-3.47) were significantly associated with complete vaccination status in the final multiple regression model. In addition, a interaction between literacy and wealth was significantly related in full vaccination status (AOR=1.38, 95%CI: 1.08-1.75). Increased frequency and quality of CHW visits could be effective intervention to enhance vaccination coverage. Future interventions focusing on vaccination coverage should be given more attention especially to high risk group identified in this study.