Infantile paralysis is short for poliomyelitis and was commonly used in the past to describe polio. Its symptoms include muscle weakness and paralysis. Jonas Salk introduced the polio vaccine in the 1950s and drastically reduced cases of polio in the U.S.Use the term polio rather than infantile paralysis. It is preferable to say “He had polio as a child” or “She contracted polio as an adult” rather than “He suffers from polio” or “He is a victim of polio.”
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