Scarey anytime it comes to the US.
Check it out:

A doctor who became infected with Ebola while working in Liberia — the third American aid worker sickened with the virus — arrived Friday at a Nebraska hospital for treatment.

Officials at the Nebraska Medical Center in Omaha have said Dr. Rick Sacra, 51, will be treated at the hospital’s 10-bed special isolation unit on the seventh floor, the largest of four such units in the US.