A poliomyelitis that results in destruction located in motor neurons of central nervous system, has material basis in Human poliovirus 1, has material basis in Human poliovirus 2, or has material basis in Human poliovirus 3, which are transmitted by ingestion of food or water contaminated with feces, or transmitted by direct contact with the oral secretions. The infection has symptom loss of reflexes, has symptom muscle spasms, and has symptom acute flaccid paralysis. [ http://www.brown.edu/Courses/Bio_160/Projects2000/Polio/Neuropathology.html http://www.mayoclinic.com/health/polio/DS00572/DSECTION=symptoms ]