CDC A-Z Index Ebola (Ebola Virus Disease) Language: English Español (Spanish) 2014 West Africa OutbreakOutbreak of Ebola in Guinea, Liberia, Sierra Leone, and Nigeria About Ebola Understanding how Ebola Spreads Ebola Signs and Symptoms 1 2 3 4 5 Signs and Symptoms Symptoms may appear anywhere from 2 to 21 days after exposure to ebolavirus……