Following the December 2014 measles outbreak at a popular amusement park in California, which spread to other states, Canada, and Mexico, there has been increased attention to US childhood immunization practices. A recent study attributed the outbreak to under immunization, and several policymakers have called for an end to religious and philosophical (i.e., personal-belief) exemptions altogether, with the state of California passing legislation removing the option of personal-belief exemptions (Hendrix et al., 2016). This policy has created several concerns regarding ethical issues especially with non-vaccinating parents. This has led to much public deliberation as to whether the state has overstepped its authority by encroaching on individual
