INDIANAPOLIS — For 45 years, Dr. Eric Yancy has treated children. He gives them vaccines when it's that time of year, but more recently, he sees parents come in with hesitation and questions when it comes to shots for their kids.

According to the Indiana State Medical Association, immunization rates across the state are below the national average .

"I have to then explain the risk," Yancy said. "I use the expression, 'You only get one chance to be wrong, ok?' And so if a child gets some of these vaccine-preventable diseases, they can get irreversibly ill."

Lower vaccination rates mean less herd immunity, Yancy said, meaning more children are at risk of getting sick.

The Indiana Department of Health says only 86% of kindergarten students in the state meet vaccine requirements , but Mari

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