The first lab-confirmed case of Ebola to be diagnosed in the U.S. was confirmed by the CDC in Dallas, Texas on Sept. 30, 2014. The man, identified as Thomas Eric Duncan, had traveled from Liberia to Texas and passed away on Oct. 8, 2014. Two healthcare workers treating Mr. Duncan subsequently became infected, but have since been cleared and released. The CDC confirmed that a fourth case was diagnosed on Oct. 24, 2014 in a medical aid worker in New York City who had returned from serving with Doctors Without Borders in Guinea. The patient is currently in isolation in a New York City hospital.