In the book Hot Zone they claim the virus can survive up to 10 days on surfaces...
Now, keep in mind the book was written decades ago, although it is a true fictionalized story. Reading the first 20 or so pages will scare the bejesus out of you though.
For those not as familiar with Ebola and potentials...this is a definite read as it is based on a true story.
The Hot Zone free .pdf download:
http://learn.flvs.net/educator/common/EnglishIIv10/TheHotZone.pdf
Tekmiras Ebola Drug Trial placed on hold by FDA earlier this month: http://www.bloomberg.com/news/2014-07-03/tekmira-ebola-drug-trial-placed-on-hold-by-u-s-fda.html
You do realize that the Hot Zone is a complete work of fiction?