Determinants of incomplete age-appropriate immunization among hill tribe children under six years of age in Chiang Rai Province, Thailand: a community-based case-control study

Hill tribe children under six years of age who are non-Thai citizens, whose caregivers are over 30 years of age, and whose mothers have never been cared for during pregnancy are likely to be incompletely immunized. Public health interventions focused on caregivers aged over 30 years or mothers who have never been cared for properly during pregnancy should be carefully designed and implemented, particularly to increase community engagement.