United Airlines says it is contacting people on flights taken by man later stricken with Ebola

United Airlines says it is notifying passengers who were on flights with a man later diagnosed with Ebola and telling them how to contact federal health officials.

United said Thursday it was also telling passengers that the Centers for Disease Control and Prevention believes the man could not have spread the disease during the flights because he was not showing symptoms and was not yet contagious.

Belgian officials say that on Sept. 19, Thomas Eric Duncan flew from Liberia in the heart of western Africa's Ebola outbreak zone to Belgium on a Brussels Airlines flight.

United says it believes Duncan flew the next day on United Flight 951 from Brussels to Dulles International Airport near Washington and connected to Flight 822 from Dulles to Dallas-Fort Worth International Airport.