There is a Liberian doctor, Gorbee Logan, who has been treating Ebola patients with lamivudine, an off-patent antiviral normally used to treat HIV and hepatitis-B cases. Dr. Logan claims to be 13 for 15, the two losses being the ones who were put on the drug the latest.
Common sense indicates starting treatment three days earlier might have made a difference.
I dont think you can make that leap, but YMMV. When we get a couple dozen cases here we will know better how it acts and if we can make a difference by intervening. Unfortunately, I think we will get that chance.