Growth defect in polio. Close-up of the feet of a 69-year-old female patient, showing a significant difference in the size of the right foot (left) ca

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Growth defect in polio. Close-up of the feet of a 69-year-old female patient, showing a significant difference in the size of the right foot (left) caused by polio infection at age 5. Polio (poliomyelitis) is caused by infection with the poliovirus. The virus attacks the motor neurons in the brain and spinal cord, and causes severe disability and paralysis and sometimes death.

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Size: 5520px × 3680px
Photo credit: © DR P. MARAZZI/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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