Mumps breaks out in Iowa
Mumps has long been on the "vaccine-preventable" list, preventable by measles-mumps-rubella (MMR) vaccine. More recently, that protection has been bolstered by the recommended second shot of the MMR vaccine. Coverage levels are high and have been for decades. So how could there be an outbreak, in Iowa of all places? No one is sure, but here are the facts:
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