But the other problems have been with us for a while. Stacking Ebola on top of them is really bad news. We've already underestimated Ebola in a number of ways.

But the other problems have been with us for a while. Stacking Ebola on top of them is really bad news. We've already underestimated Ebola in a number of ways. The assumption was that it's not easily transmissible, but it's spreading, so perhaps that assumption is not as true as we thought. The fact that doctors are getting infected is certainly a bad sign. Perhaps this strain is more easily transmissible, or will be soon due to a larger infected population within which it can evolve. Also, none of those other problems require drastic measures like a 3-week quarantine, which is costly, disruptive, and doesn't scale well.