NEW : During a September 20 appearance on CNN 's `` Larry King Live , '' Carter said he planned to stay busy in the future . Carter suffered likely viral infection . Former president will remain in Cleveland hospital for morning . The former president was taken to a hospital for an upset stomach . Jimmy Carter , who turns 86 86 Friday , was in Georgia to sign copies of his new book .
NEW : Carter suffered likely viral infection . Former president will remain in Cleveland hospital for morning . The former president was taken to a hospital for an upset stomach . Jimmy Carter , who turns 86 86 Friday , was in Georgia to sign copies of his new book .