Determinants of defaulter to full vaccination among children aged 12-23 months in Siraro district, West Arsi zone, Oromia, Ethiopia: a case-control study.

Background: Vaccination is one of the most cost-effective global public health interventions to reduce childhood morbidity and mortality. Defaulters to full vaccination can put children at greater risk of acquiring vaccine-preventable disease outbreaks. The reason for not receiving full vaccination is not well explored, and hence, there is limited evidence about defaulters of vaccination in Ethiopia.