The islamonazis could walk some over in suicide carriers across our undefended borders, send some in trade good shipments via pestilence vector, and others could be spread via contamination of food stuffs or delivered over a wide area via different forms of hijacked vehicles like aircraft or fogging trucks.
Then there are the dangerous ones. There is literally no end to the way the Obamunists could spread things.
You dont remember the comment from jerkoff biden about Iran making bombs during the VP debates do you?