In his latest essay Friday evening, PBS host Bill Moyers expressed concern over the growing rate of children not being vaccinating due to their parents receiving exemptions from states for religious purposes.

Inspired by what he witnessed in the movie Contagion, Moyers mentioned a variety of statistics to his audience on the sudden increase in children not vaccinated and provided his frank assessment on how harmful those choices are to society.

"When and if a contagion strikes, we can’t count on divine intervention to spare us," he said. "That’s when you want a darn good scientist in a research lab. We’ll need all the help we can get from knowledge and her offspring."

WATCH: Video from PBS, which was broadcast on February 24, 2012.

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Bill Moyers Essay: Are Immunization Exemptions Fair to All? from on Vimeo.