Guinea

...As the global economy absorbs the most punishing reversal of fortunes since the Great Depression, hunger is on the rise. Those confronting potentially life-threatening levels of so-called food insecurity in the developing world are expected to nearly double this year to 265 million, according to the United Nations World Food Program.

It begins with a mild fever and malaise, followed by a painful cough and shortness of breath. The infection prospers in crowds, spreading to people in close reach. Containing an outbreak requires contact tracing, as well as isolation and treatment of the sick for weeks or months.

This insidious disease has touched every part of the globe. It is tuberculosis, the biggest infectious-disease killer worldwide, claiming 1.5 million lives each year.