States have a key role in ensuring access to vaccination because they can set school entry requirements, regulations and programs that affect vaccination coverage[1]. State mandates and policies, including school requirements, are associated with higher vaccination rates and help suppress disease transmission[1]. In the US legal tradition, such state interventions are considered a legitimate use of state "police" power to protect public health[1]. Variability in state policies, especially the possibility of non-medical exemptions, leads to differences in vaccination rates between states and can exacerbate spatial and demographic inequalities in protection[2]. Evidence from multiple studies shows that eliminating or limiting non-medical exemptions reduces overall exemption rates and can increase vaccination coverage[2]. The authors of the article emphasize that state policies, including parent education and enforcement of school entry requirements, are effective tools for improving vaccination coverage[3]. Specific measures and their implementation at the state level directly affect the availability of vaccination and the ability to control outbreaks of infectious diseases[1][3].