Kids and concussions: Nearly 2 million cases a year

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Each year, nearly 2 million children under 18 experience sports- and recreation-related concussions. But according to a new study, more than half a million of those concussions were not treated in health-care settings. The authors say health providers should be trained in concussion care to better understand how the brains of young people are affected by them. (Run time: 0:28)