In either case an infected individual would have little chance of surviving a trip to a foreign country, or even a few hundred mile primitive journey within his own country, if symptoms had already begun and he was infectious. People could/would be infected in the latter case but a good chance all involved would be quarantined (as in the Canada suspect case).
I’d worry more about those who were exposed but haven’t displayed symptoms.
“The incubation period, that is, the time interval from infection with the virus to onset of symptoms, is 2 to 21 days.”
http://www.who.int/mediacentre/factsheets/fs103/en/
I’m so glad that Canada did quarantine the guy and acted quickly.