Well, when a person got Ebola, he/she can spread all over the world till he/she dies. Like how ebola spreads to another person in one of these condition:
Contacted to blood,saliva,tears,sweat, etc. Even skin.
Contacted in the same room. (Like breathing in the same air).
Basically you can't touch the person that has Ebola, if you contacted any where, even air, he/she will get Ebola. Is scary.