The upper limit on Se in the body is 400iu a day above that selenosis (nausea, headache) occurs. But, if the virus is using massive amounts of Se then if you induce selenosis (as measured by serum level) then this should immediately cause even a late stage patient to improve and get well if they are not beyond the point of no return. Transfused L-Ascorbate has been used successfully to remediate Lassa fever, caused by a related selenovirus and is almost certainly indicated - that doctor went so far to suggest that higher dose of transfused ascorbate would reverse Ebola but I do not think so, selenium is the key to break the life cycle but ascorbate should relieve the scurvy-like symptoms.

Two Brazil nuts a day, the most potent dietary source of Se should confer immunity to the virus. They need to be eaten for 42 days until the last case in that country has been cleared.

The virus can exist in the breast milk and semen of recovered patients for up to 30 days and anybody in contact with them needs to have sufficient Se serum levels.

There is also a public health implication for all EBOV susceptible wildlife from Africa: they must be maintained on a selenium rich diet for the same 42 days. This applies to any fauna that is susceptible to the virus. As Durrell pointed out, animals do best when maintained in their natural state and for animals from Se rich areas this includes a diet high in selenium. Feeding fruit bats from Se high ares bananas is a fatal mistake but if they are what they did in the wild the most you will ever see is EBOV antibodies.

It seems unlikely to be a coincidence that only animals that have lost the gene to produce L-ascorbate can catch the virus ans this should be the subject of future research - the virus may encode for L-ascorbate as well, which might also explain its affinity for collagen - in hosts the virus settles on collagen fibers and digests them. Collagen breakdown is what causes the bleed out, these fibres hold the body together and its destruction is the basis for hemorrhagic modality.