So far we have a small handful of US infections - mostly related to one guy who brought it in the country and the healthcare workers who didn't follow appropriate protocols while working with him. (Some of that blame might lie on the CDC and the hospital's management - not all of it on the nurses.)
Contrast this with the 5% - 20% of people in the US who get the flu every year and the 200,000 who are hospitalized with flu-related complications. (Source)
Can we please stop comparing Ebola to the flu?
For starters, Ebola apparently has a 70% mortality rate. Additionally, Ebola kills people who are otherwise perfectly healthy. The flu does not.
The flu is a health concern, yes, but widespread infection of Ebola is a nightmare that would make (in Sierra Leone, "makes") most years' flu seasons look like a sneezing fit.