By Gail Elber, The World

In 2009, Kyle and Sara Cox and their newborn son Zakkary had a close call. An apparent reaction to a hepatitis B vaccine gave Zakkary a stroke — and could have sent his parents to jail.

The Coxes were lucky. Now Zakkary’s grandmother, Tracy Kidd, is on a mission to make sure that other families don’t have to go through what hers did.

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