Ebola Arrives In USA

This undated file image made available by the CDC shows the Ebola Virus. U.S. health officials have warned for months that someone infected with Ebola could unknowingly carry the virus to this country, and on Tuesday came word that it had happened: A traveler in a Dallas hospital became the first patient diagnosed in the U.S. (AP Photo/CDC, File)

• Also: Ebola in America, what you need to know

Question: Are you concerned that an Ebola outbreak could take place in this country?