For the first time, the United States is dealing with its first undetected case of Ebola. Four previously infected patients have already come back to the US from West Africa, but in every one of those cases, the Centers for Disease Control and Prevention already knew they were sick, and on the way. Now, officials say an unidentified man in Dallas is in critical condition after being exposed to the public for four or five days. CDC officials have already alerted doctors and health workers to be on the look out for anyone who might have come in contact with the man. Several physicians have already begun their detective work. Doctor Edward Goodman says, "We're simply going to track all the people who had contact with him and we're going to watch them to monitor their health." Dr Goodman's other job is to manage public concern. As part of it's pre-established protocol, the city of Dallas has activated its emergency operation center to monitor any other potential contact