More than 50 children in 23 states have had mysterious episodes of paralysis to their arms or legs, according to data gathered by the Centers for Disease Control and Prevention.
The cause is not known, although some doctors suspect the cases may be linked to infection with enterovirus 68, a respiratory virus that has sickened thousands of children in recent months.
That so many children have had full or partial paralysis in a short period is unusual, but officials said that the cases seemed to be extremely rare.
