According the U.S. State Department, the World Health Organization, and UNICEF, the world's greatest infectious killer is not malaria, AIDS, or TB but poop. An estimated 2.6 billion people, about 40% of the world's population, including 1 billion children, have no access to toilets of any kind and must practice open defecation. The result is a continual pandemic of intestinal afflictions that kill 2 million people a year.
ARTICLE BONUS: India: More mobile phones than toilets
