Childhood vaccines worsened a rare, previously existing disorder in a Georgia girl, leading to autismlike symptoms, government health officials said, emphasizing that the case is an exception. Those who believe vaccines are tied to autism see the decision as a victory. "It's a beginning," said Kevin Conway, a Boston lawyer representing 1,200 families in vaccine cases. "It shows to me that the government has conceded that it's biologically plausible for a vaccine to cause these injuries."

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