A major policy concern across public vaccination programs is non-compliance. Exploiting Danish population data and three national reforms in regression discontinuity designs, we document the effects of reminders for childhood vaccination coverage. Retrospective reminders are primarily effective for families with small children and when sent out close to the recommended vaccination age. Digital and postal reminders are equally effective. Prospective reminders increase timely vaccinations in later childhood and help reaching high coverage for new vaccines in increasingly complex vaccination programs. While reminders prompt additional preventive care for focal children, we find no spillovers to other health behaviors or relatives.

公共疫苗接种计划的一个主要政策问题是不遵守规定。利用丹麦人口数据和回归间断设计中的三项国家改革，我们记录了儿童疫苗接种覆盖率提醒的影响。回顾性提醒主要对有小孩的家庭以及在接近建议的疫苗接种年龄时发出有效。数字提醒和邮寄提醒同样有效。前瞻性提醒可以增加儿童后期的及时疫苗接种，并有助于在日益复杂的疫苗接种计划中实现新疫苗的高覆盖率。虽然提醒提示对重点儿童进行额外的预防性护理，但我们发现不会对其他健康行为或亲属产生溢出效应。