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ac dnt gupta ebola unknowns_00005517.jpg

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    What we still don't know about Ebola

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What we still don't know about Ebola

CNN's Dr. Sanjay Gupta examines what health officials still don't know about the Ebola virus.

What we still don't know about Ebola

CNN's Dr. Sanjay Gupta examines what health officials still don't know about the Ebola virus.