Ebola

Ebola is a deadly contagious disease. From 1975 to 2013, it killed about 1,500 people. But a 2014 epidemic killed more than six times that number. At first the outbreak was contained to one country. But soon it spread to two others—the virus was on the move, and people were scared. When two American healthcare workers became infected and were sent to the United States for treatment, many people fe...