As of the evening news today, he is NOT showing symptoms.
This all started last night with a site called "GotNews" which based it on some completely unsourced Twitter rumors. (If one believes Twitter, Ebola is in every city, every town, and every hospital.) The FReakers were going nuts over it last night and anyone who pointed out that it was completely unsourced was attacked for being part of a coverup.
People really need to stop trusting every random website out there because most will post anything as breaking news without anything more anonymous Twitter reports, if even that.