[nostromo]

Because Ebola has already been shown to be transmissible via the air, but only in other species.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3498927/

> Piglets [with Ebola] were transferred to the room housing macaques in an open inaccessible cage system. All macaques became infected.

[techdragon]

Dont overstate this particular study, the team did nothing to eliminate the possibility that there was transmission via droplets flung off the animal, and did not fully eliminate the possibility of particulate cross contamination which could have lead to transmission via infectious fluids piggybacking to the macaques on the particulate cross contamination.

Yes there is a risk of mutation to transmit via air, but we have not yet seen it. We have merely proven that 'shit happens' and 'ebola is dangerous'.