I mentioned earlier that those two infected American aide workers in Liberia had been given an experimental Ebola treatment which seemed to have a dramatic effect on the course of their illness. So how are we only hearing about this treatment when two American aid workers came down with the disease after going on 800 people have died in the current outbreak in three countries in Africa? We shouldn't assume the answers are bad ones. But there's no ignoring the question. Here's a new piece just out from the AP on the US government's role in securing several courses of the treatment, which had never been tested on humans before and had undergone only limited tests in monkeys.