Yep. I predict 99+% of all the "quarantined with Ebola-like symptoms" cases we'll start hearing about will turn out not to be Ebola.
Are we going to quarantine everyone who pukes and runs a fever? This is how panics start.
I think everybody who travels from those countries should be examined and quarantined here or upon their arrival at the European airport where they transfer to the US bound plane. Personally, I think stopping air traffic from those places would be the cheapest and easiest. But otherwise, go back to the Ellis Island model and quarantine the arrivals.
That said, some lab is working on developing a quick and accurate test for Ebola and hopefully then everyone who has traveled there will be required to take it upon their arrival in Europe or the US.