It doesn’t take any imagination or pessimism to see the inevitable. An imam will get Ebola and his followers will kiss him and his infected clothing, then get on airplanes to the US and Europe. Surely people willing to die with a bomb attached to their bodies won’t hesitate to doom themselves this way.
Even more likely are infected Hajis on their way to Mecca. The Saudis are blocking people from 3 African nations, but they can’t keep ebola out.
We can’t (won’t, shouldn’t) reject all Muslim visitors nor quarantine them all for 20 days.
Gaia may have finally concocted the right antibody.