I actually read a book about Ebola long ago. I forget the title, but it went into the Ebola (and closely related virus like Marburg) outbreaks in Africa and the United States (Yes, there was an outbreak of Marburg in the US). In it’s present form, Ebola has a strange contagion profile that they didn’t understand back then, maybe there’s more info now, but it seemed to not be as contagious as you’d think. Even when gobs of the virus were around, it wasn’t always easy to catch. IMHO, I think the virus is more amenable to the living conditions in Africa where someone gets it and people don’t realize and hygienic conditions are a little more lax.