On Feb. 27, 2015, the U.S. Centers for Disease Control and Prevention (CDC) responded to the West Africa Ebola outbreak.

The World Health Organization reported a total of 23,253 confirmed, probable, and suspected cases of Ebola and 9,380 Ebola-related deaths had been reported as of Feb. 18 from the three West African countries (Guinea, Liberia, and Sierra Leone) where Ebola virus transmission was widespread and intense.