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Because the natural reservoir host of Ebola has not yet been confirmed, the way in which the virus first appears in a human at the start of an Ebola outbreak is unknown. Based on evidence and the nature of other similar viruses, researchers believe that Ebola is animal-borne (zoonotic) and that bats are the most likely reservoir. Scientists believe that the first patient becomes infected through contact with an infected animal, such as a fruit bat or primate (apes and monkeys), which is called a spillover event. Person-to-person transmission follows and can lead to large numbers of affected people.
The presence of the CDC logo and CDC content on this page should not be construed to imply endorsement by the US Government of any commercial products or services, or to replace the advice of a medical professional. The mark “CDC” is licensed under authority of the PHS.
The presence of the CDC logo and CDC content on this page should not be construed to imply endorsement by the US Government of any commercial products or services, or to replace the advice of a medical professional. The mark “CDC” is licensed under authority of the PHS.
Continue Learning about Ebola
Ebola
Ebola virus disease is a severe, often fatal illness in humans. It is caused by a family of viruses that originate in central and west Africa. The disease is rare and occurs in sporadic outbreaks. Ebola is spread through direct co...
ntact with the bodily fluids of infected individuals or objects, such as needles or bedsheets, that have been contaminated with the virus. Your risk of contracting Ebola is very low unless you visit an area where it is widespread. There are no approved treatments for the disease, but some experimental treatments have shown promise. Vaccines are currently under development.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.