Overview In December 2013, a little boy in a village in Guinea, became ill and died just a few days later. This death, unnoticed at the time by few beyond family and neighbors, set off a horrific Ebola outbreak, infecting over 26,900 people and killing more than 11,000. The most heavily affected countries include the three neighboring West African countries of Liberia, Sierra Leone and Guinea – poor countries with limited resources, weakened health systems and porous borders. The World Health Organization declared a public health emergency of international concern in August 2014, and soon thereafter the UN Security Council established the UN Mission for Ebola Emergency Response (UNMEER) to coordinate efforts to stop the epidemic.