But also in 2005 there was a Nature paper that said "Bat species eaten by people in central Africa show evidence of symptomless Ebola infection." and that bats carried the virus without symptoms and passed it to primates. By 2012 the papers say "Fruit bats are the presumptive reservoir hosts of Ebola viruses (EBOVs) (genus Ebolavirus, family Filoviridae)." So it is a more or less consensus that the bats carry the virus and survive and that they have the potential to pass it to humans. It is a scientific alternative to the theories in this thread. But It also doesn't preclude the possibility of genetic engineering. I tend to believe Mother Nature did all the genetic engineering in this case.
The article says it wouldn’t be a good terrorism weapon, but I disagree. What would stop a bunch of deliberately infected people from penetrating Western Population centers and then waiting until they are in the infectious stage to go into crowded areas like sports venues? Or, to blow themselves up like they are know to do, but do it while highly infectious.
This mess has already caused an economic problem for a lot of businesses and countries. We really should quarantine travelers from infected areas, but even that might not be great if terrorist tried some type of relay method - ether live hosts or blood samples (does it survive being frozen?).
I hate the idea of an Ebola vaccine being forced on people. A cure would be much better.