outbreaks in ten states. Vaccinations prevent many communicable diseases, but

measles is back. Epidemiologists believe it's because some parents do not

immunize their children. As a result, the so called “herd protection” from

disease that public health officials rely on, is weaker. The option to forgo

vaccinations varies from state to state and is based on laws that are different

across the country. Some states allow vaccination exemptions based on a person’s

religious or philosophical beliefs. However some lawmakers are rethinking their

vaccination policies because of the recent up tick in measles cases - and

they’re looking to an unlikely part of the country as a model: Appalachia.