WHO withdraws staff from Sierra Leone Ebola lab after doctor became infected.

[cosmicone]

3. Not really

considering the virulence of the virus. In the research labs, it is classified as a bio-safety level 4 virus and specimens are handled very strictly in negatively pressurized bio-safety cabinets inside ISO-5 rooms. In the field, those precautions cannot be adhered to and doctors can get infected from body fluids that can infect in tiny/microscopic droplet form. Nothing short of something similar to a spacesuit will prevent a rare infection.