Study points to virus as culprit in kids' paralyzing illness

Scientists have found the strongest evidence yet that a virus is to blame for a mysterious illness that can start like the sniffles but quickly paralyze children. The poliolike syndrome, called acute flaccid myelitis or AFM, is very rare. Since the first reports from California in 2012, the U.S. has experienced an increasingly bigger outbreak every other year, from late summer into fall.