What is Ebola?
Ebola is a rare and deadly disease caused by infection with a virus of the family Filoviridae, genus Ebolavirus. Ebola can cause disease in humans and nonhuman primates (monkeys, gorillas, and chimpanzees).
Ebola was first discovered in 1976 near the Ebola River in what is now the Democratic Republic of the Congo. Since then, outbreaks have appeared sporadically in several African countries.
Risk of Exposure
The ongoing 2014-15 Ebola epidemic is the largest in history, affecting multiple countries in West Africa. Although the risk of an Ebola outbreak in the United States is very low, CDC and partners are taking precautions to prevent this from happening. Healthcare providers caring for Ebola patients and those in close contact with Ebola patients are at highest risk of getting sick, as they may come into contact with the blood or body fluids of sick patients. The virus is spread to humans when there is direct contact (through broken skin or mucous membranes) with:
What are the symptoms?
- blood or body fluids
- objects that have been contaminated with the virus (e.g., needles)
- infected animals
It can take anywhere from two to 21 days after infection for symptoms to appear but the average length of time is 8-10 days. Symptoms include fever (greater than 101.5°F), severe headache, muscle pain, weakness, diarrhea, vomiting, stomach pain, and unexplained bleeding or bruising.