States Target Anti-Vaccine Parents Amid Measles Outbreak

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A national debate over mandatory child vaccination is forcing state legislatures to reconsider decades-old laws allowing parents to opt out of inoculations.

A measles outbreak that started in California has infected about 100 people, a minority of which are confirmed to be vaccinated. Flare-ups of the highly contagious disease are becoming more common in the U.S., where 19 states have laws letting people choose not to vaccinate their children based on personal belief, rather than solely for medical or religious reasons.