Step 1 : Introduction to the question "Health officials say that acute flaccid myelitis (AFM), which has been detected in 25 states, is similar to what well-known disease that was largely eradicated in the 20th Century?"
...Poliomyelitis, often called polio or infantile paralysis, is an infectious disease caused by the poliovirus. In about 0.5 percent of cases there is muscle weakness resulting in an inability to move.;Causes: Poliovirus spread by fecal-oral route
