From your link: "The patient in Orlando felt ill on the first flight, officials said, but not ill enough to notify a doctor. Early in the hours of May 9, he apparently became concerned that he was still feeling ill, and he went to the emergency room at Dr. P. Phillips Hospital, according to Dain Weister, a Florida Department of Health public information officer. He identified himself as recently having been in Saudi Arabia, so he was quickly isolated to avoid contaminating other patients, Weister said." He was having symptoms for 8 days before seeking treatment. At least he had the sense to let the hospital know that he had been in Saudi Arabia. And it's another healthcare worker.