To put things into prospective about "curing things" something you have to understand... Lets take the common cold for example. Something you would believe to be the easiest thing to cure... right? Relatively simple... low symptoms. Sniffling, itchy eyes, low fever, coughing maybe a headache and some aches. This is caused by the rhinovirus and there are well over 150 strands of it. When these colds initially enter your body, they enter as say, cold A. However while they are in your body, they mutate, causing an additional strand of a cold. You go next to your coworker and before you know it, you spread it to them. They mutate said cold and take it home to your loved ones. It mutates and they give it back to you. It's a vicious cycle of mutating rhinovirus.
Viruses are ALWAYS harder to cure than bacteria simply because viruses are small molecules that produce only a handful of proteins, so there are fewer "targets" for treatment. There are five known strands of Ebola. It is hard to try and cure Ebola because it is so incredibly dangerous to humans, that it presents an incredible difficulty for scientists to experiment with. So, they must work in HIGHLY protected laboratories with HIGHLY protected rooms and suits... which you can imagine is incredibly expensive and very limited. Not every scientist exactly jumps at wanting to study this being it has a mortality rate as high as 90%. So, there are only a handful of places in the world you can do Ebola experimentation. Also, at this point in time...relatively few people have ever been infected with Ebola, and even fewer have survived, thus making it hard to study the virus in people or examine whether there are certain biological factors that help people survive. There are some studies that show promise... but nothing as a cure thus far... sadly. It is a very difficult thing to cure.
All you can do for the person is hook them up to an IV, hydrate them, treat any internal and external bleeding they may have and hope for the best, sadly. Ebola is a quarantine level 4... which is the highest precaution medical staff and scientists take. It is immediate lock down and suit up, no exceptions. All we can do is hope this will not spread... Personally and from what we have been told, I don't think it will be a zombie apocalypse as Jiro said...
You can rest well tonight. :P