My dh travels all over and where we live in the EU is a hub for people travelling in from W Africa, so I understand your fears, but YABU I think.
I suppose there might be a case for 'only travelling when absolutely necessary' for a month or so, to step back and see how the situation is progressing, but really I just think you have to carry on as normal because there are many places one could potentially become infected other than on transport ie I understand that university cleaners in some parts of the country have been briefed about Ebola symptoms owing to the thousands of students from W Africa travelling to UK universities to start or continue their studies during October.
Any of those students from the counties concerned could look absolutely fine going through airline checks and then develop systems up to 21 days later (or roughly that I think).
And airlines are on such an alert now that I think, ironically, it could be one of the safest times to travel!
Also, apparently the scientist who discovered the Ebola virus said he would be quite happy to sit next to someone on a train who was infected with it. (I think this is because people only become infectious when they are displaying quite visible symptoms in the more serious phase of the illness: diarrhoea, vomiting, bleeding from varous orifices.)
I wouldn't choose to fly to Liberia, Sierra Leone or Guinea atm (the outbreaks in Nigeria and Senegal have been more or less contained), but anywhere else I think you just have to carry on as normal and take your chances.