is spreads through direct contact with body fleurds. blood, -- drug companies are working to develop up. it can kill up to 95% of those that contract it and spread pan nick community. the -- since countries in the country. senegal -- nigeria and the republic of congo. they contact that over the last nine months over 5,000 cases and 250 deaths. president obama has stressed that the likelihood of a outbreak is extremely low. but that doesn't cover all of basics. >> it's is threat -- if people panic. that has profound effects on all of us even if we are not directly contracting the disease. >> is it conceivable that this could affect global security or was that high -- >> in terms of the global economy, it's hyperbole. if you get a number that contract it over there and an outbreak from, there will be a fire stone so bring them and take care of our own people first. i think the president will be in very serious trouble will happen. >> he's gotten the u.s. troops contracting this. president said they're not going it come in direct contact w