OMIKRON / SCIENCE PHOTO LIBRARY OMIKRON / SCIENCE PHOTO LIBRARY
Infection with the polio virus can cause poliomyelitis, a communicable disease that can affect the whole body, including muscles and nerves. Severe cases of the disease may cause permanent paralysis or death. Immunization via vaccine is 90% effective in preventing poliomyelitis in most people. Enhancement of 9b4742.
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