Sir Leigh Teabing had suffered from polio as a child and now wore leg braces and walked with crutches, but Langdon had found him such a lively and colorful man on his last visit that it hardly seemed an infirmity.
More clever still, Teabing had situated his electronic listening post in the one place a man with polio could not possibly reach.
There are no more uses of "polio" in the book.
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Polio paralyzed and killed thousands of Americans a year before vaccination began in 1955.
Their leader was Maulana Fazlullah, a 28-year-old who used to operate the pulley chair to cross the Swat River and whose right leg dragged because of childhood polio.