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paralysis a loss of feeling in or the ability to move a body part. Paralysis is caused by injury or disease of the nervous system.
polio a short form of poliomyelitis, a disease caused by a virus that attacks the spinal cord and damages the nervous system. Poliomyelitis affects mainly children and can lead to paralysis or deformed limbs.
poliomyelitis a disease caused by a virus that attacks the spinal cord and damages the nervous system. Poliomyelitis affects mainly children and can lead to paralysis or deformed limbs. Jonas Salk invented a vaccine that prevents poliomyelitis.