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Among vaccines delayed until a child grows older, the measles-mumps-rubella (MMR) vaccine topped the list.
Among vaccines delayed until a child grows older, the measles-mumps-rubella (MMR) vaccine topped the list.

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    What's driving the spike in mumps cases in U.S.?

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What's driving the spike in mumps cases in U.S.?

The U.S. is seeing the most mumps cases in a decade. CNN's Elizabeth Cohen reports.

What's driving the spike in mumps cases in U.S.?

The U.S. is seeing the most mumps cases in a decade. CNN's Elizabeth Cohen reports.