I honestly think the next step in this disaster are terrorists or other dark forces who wish to see a collapse in societies. People who would be willing to infect themselves to destroy the free world or the United States.
They wouldnt have to even infect the U.S. directly. But utilizing the long window period of Ebola (21 days avg) and going into rural parts India, Mexico or China would be a logistical nightmare for the United States which has large populations of all three. In the long run. Im sure these forces have already thought about this deeply.