The S&P 500 dropped more than 1 percent and posted its worst three-day slide since November 2011 on Monday following worries that global economic weakness will dampen U.S. earnings, along with concern about the ★spread of Ebola.★
Dr. David Sanders, top Ebola virologist and Purdue University professor of biological science, explained that a very closely related virus is known to spread among animals via the air.