The death of Liberian American traveler Patrick Sawyer stoked fears that the Ebola virus could cross the Atlantic. But despite the wide spread of the disease in West Africa, it has almost no chance of breaking out the United States thanks to the deep medical infrastructure here.The death of Liberian American traveler Patrick Sawyer stoked fears that the Ebola virus could cross the Atlantic. But despite the wide spread of the disease in West Africa, it has almost no chance of breaking out the United States thanks to the deep medical infrastructure here.