Throughout history there have been cases of the plague and other diseases that have ravaged the county side because there was no natural immunity to those diseases built up in the general population. The native Americans were almost wiped out because of the diseases that the early settlers brought with them. We now have 3 or 4 people in the United States that have immunity to the Ebola disease and the other +300 million are susceptible to it. Sure, the doctors and politicians say that the disease is not transferable until the symptoms appear but do you know anyone that refuses to go to the Dr because he has things to do. Lets nip it in the bud and take no chances with it.