I don't think we can know, yet, whether there is a reservoir animal here.
What we do know is that rats and roaches in slums crawl from apartment to apartment. If one infected individual in the projects vomits on his floor without cleaning it thoroughly, vermin will spread it to the neighbors, and someone will touch a contaminated surface and then his face or a cut. Repeat. What we also know is that some gay men are promiscuous. Once it hits the gay community, we are going to see bad results. It's contagious through sex early in the fever and after recovery for seven weeks after symptoms disappear.
Even without a reservoir animal in which Ebola can hide without human hosts, it will be hard to eradicate here if it gets out of control in the first place.
Ebola researchers looked for a long time to find the carrier species in Africa. One of those CDC scientists used to post here at FR and she predicted it would be found in fruit bats, which it subsequently was.
Had rats been Ebola carriers that would have been easy to confirm. They’re not. Three species of Pteropodidae fruit bats are where Ebola lives between outbreaks.
Roaches- you’re into wild speculation now. This isn’t an insect borne virus.
Ebola scares people enough without adding imaginary threats to the mix.