There was always the incantation: "Whoever wishes you harm, may harm come to them " And just in case that didn't work, there were garlic and cloves to repel the Evil Eye--or, better yet, the dried foreskin from a baby boy's circumcision, ground to a fine powder. But whatever precautions Brenda Serotte was subjected to, they were not enough. Shortly before her eighth birthday, in the fall of 1954, she came down with polio--painfully singled out in...