I do think it is passed by touch, through moisture on the skin. I do think if an infected person coughs or sneezes others can catch it. The fact it is a virus makes it very contagious because viruses are so small a mist of water can be packed with Ebola.
The first rule of Ebola is to NEVER EVER touch a person infected with Ebola, that is the primary way to get infected. I read some time ago about ten people got infected with it because they handled a dead body, in that part of the world they wash the deceased and kiss the dead.