@CNN: The risk of outbreaks is rising in 12 of the 18 states that permit nonmedical exemptions from childhood vaccinations, new research finds https://t.co/r4EF1YROZ2 https://t.co/L2bMSFOWpW

@CNN: The risk of outbreaks is rising in 12 of the 18 states that permit nonmedical exemptions from childhood vaccinations, new research finds https://t.co/r4EF1YROZ2 https://t.co/L2bMSFOWpW