i just keep wondering how it is that we know it's a killer, and we know exactly how and when it's transmitted ... and yet two people with all that knowledge in the good old USA where we are so very very perfect and pristine in our process and the best medicine in the world that no one could ever catch ebola here and I could go on for three more paragraphs about our greatness, that two trained professionals who knew without a doubt that their patient had the disease, caught it anyway. One patient, two transmissions. To me thatsays the specifics are a bit blurrier than implied.

I understand why this is not emphasized . If there is no symptomatic person out there transmitting the disease, high and perhaps not 100% understood transmission risk is irrelevant, but I doubt people would make the distinction. I do appreciate NPR for trying to explore different aspects of what's going on and not just spouting rhetoric.