Reportedly the first Ebola patient in US came in contact with 100 people before he was isolated in a hospital in Dallas Texas. The US health officials immediately initiated contact tracing. They were monitoring 50 people for Ebola exposure 10 of whom have been identified at 'high risk' of the disease after close contact with the first diagnosed American patient. United States Centers for Disease Control and Prevention (CDC) has identified 10 people who had contact with Thomas Eric Duncan?America's first diagnosed case?of?Ebola. CDC made contact with about 100 people that had possible contact with Duncan and narrowed to 50