Does polio still exist? Is it curable?

This is a question and answer about polio: Does polio still exist? Is it curable? Updated October 2012
Source: WHO Feature Stories - Category: Global & Universal Tags: communicable disease [subject], infectious diseases, communicable disease [subject], infectious diseases, emergencies [subject], emergency preparedness, crises, emergency preparedness, immunization [subject], vaccination, infectious disease [subject], com Source Type: news