There have been 17 times as many U.S. measles cases in the first three months of this year compared to the average from the previous three years. Dr. Jeffrey Griffiths, professor of public health at Tufts University, joins On the Record with Steve Scott to discuss the CDC's warning.

Photo: Getty Images

<p>There have been 17 times as many U.S. measles cases in the first three months of this year compared to the average from the previous three years. Dr. Jeffrey Griffiths, professor of public health at Tufts University, joins On the Record with Steve Scott to discuss the CDC's warning.<br><br>Photo: Getty Images</p>

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