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It could be something as simple as poor procedure of removing the protective gear, to underestimating the life of transmission for droplets. Figure 100 people come in contact with one ebola patient while wearing protective gear, one person fails to follow the correct procedure, and there you have 1 percent that is exposed to ebola. That is completely plausible, unfortunate, but plausible.

I would think that if it were truly airborne, far more people would have contracted ebola by now.