It is not known how these viruses transmit. Do they involve other creatures like the mosquito for the yellow fever?
It is known that they can pass through contact of blood from an infected person.
This is the first photo ever taken of Ebola Zaire virus, on 10/13/1976 by Dr. F.A. Murphy, now at UC Davis, then at CDC. Diagnostic specimen in cell culture at 160,000 x magnification.
Symptoms include acute viral blood poisoning, bizarre rashes, severe diarrhea, bloody vomiting, hemorrhages from every orifice, and skin can come off.
There is no cure for this disease. There is also no treatment but rest, etc. and try to let the body fight of the disease on its own. The best containment for this disease is to quarantine all people that have had contact with this disease until it has passed. Because of its fast kill rate and relative difficulty in transmitting the disease, it is probably easy to handle if an outbreak does occur.