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It starts out like a common viral respiratory illness but leads to terrifying symptoms, including paralysis. Could a common virus be behind the illness?
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The Centers for Disease Control and Prevention is investigating 252 cases of acute flaccid myelitis and has confirmed 90 cases. One or more viruses is suspected, but CDC says the cause is unknown.
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Acute flaccid myelitis causes weakness in arms or legs. The cause isn't clear but may be related to viruses, environmental toxins or genetic disorders. Since 2014, 386 total cases have been confirmed.