evidence: Parents of exempt children were more likely than parents of vaccinated children to report low perceived susceptibility to and severity of VPDs, low perceived vaccine efficacy and safety, and a low level of trust in the government. However, parents of vaccinated children also held beliefs that questioned the safety and utility of vaccination: 20.3% were concerned that children get more immunizations than are good for them, 32.2% were concerned that a child’s immune system could be weakened by too many vaccines, and 10.8% reported that it is better to develop immunity from natural disease than from vaccination, although at lower rates than parents of children who were not fully vaccinated. These data are similar to findings by Gellin et al22 for the same questions in the general population and indicate the need for additional educational interventions for parents. The parents of children considering exemptions should be targeted with extra effort to provide them with accurate information from sources that they trust.