Expected surge in virus that can paralyze kids didn't happen, baffling experts

An outbreak of acute flaccid myelitis, a virus that can paralyze children, was expected to spread across the U.S, but never did -- baffling experts.

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Amy Moore ,Robert Redfield ,Janell Routh ,Centers For Disease ,Ohio State Wexner Medical Center ,Division Of Viral Diseases ,Medpage Today ,Disease Control ,Health Alert Network Advisory ,New England Journal ,