The disease is not highly contagious. It is highly deadly, and moderately contagious in the final stages due to high concentrations in body fluids.
The first Ebola death, the guy died in his house with a number of family members caring for him, and a fair number of people visiting, and none of them caught Ebola. a couple nurses caught it from his last hours.
A 'couple'... I'm assuming two or more... Yes, that's why the disease is so dangerous...