Ebola virus disease (EVD) is a rare but serious disease caused by infection of the Ebola virus. There are five known strains of the virus. Four of them affect people. One affects only nonhuman primates (monkeys, gorillas, and chimpanzees) and pigs.
Ebola virus disease was first identified in 1976 near the Ebola River in the Democratic Republic of Congo (formerly Zaire). In 2014, large outbreaks occurred in the West African countries of Liberia, Sierra Leone, and Guinea. According to the Centers for Disease Control and Prevention (CDC), 11 people were treated in the U.S. during the 2014-2016 epidemic and one person died. Ebola virus disease is still an ongoing situation in the Democratic Republic of Congo, with reoccurring outbreaks.
Symptoms of Ebola virus disease often begin 8 to 10 days after a person is infected with the virus. The virus cannot be spread to another person until symptoms appear.
Early symptoms can include:
- Fatigue
- Fever
- Muscle pain
- Headache
- Weakness
Later symptoms can include:
- Nausea
- Diarrhea
- Stomach pain
- Unexplained bruising or bleeding, such as a bloody nose, bloodshot eyes, or bloody urine or diarrhea
Ebola virus disease is caused by the Ebola virus. It’s origin or how it started is unknown. Scientists believe that it is animal-borne and most likely comes from bats, which transmit the Ebola virus to other animals and humans. There is no proof that mosquitos or other insects can transmit the virus. Once infected, a person can spread the virus to other people.
The Ebola virus is not as contagious as common viruses, such as colds or the flu. It is not spread through air, water, or food. The Ebola virus is spread through direct contact with:
- Blood of a person infected with the virus
- Body fluids, such as breast milk, stool, saliva, semen, sweat, urine, or vomit, of a person infected with the virus
- Objects, such as needles or syringes, that are contaminated with the virus
- Animals, such as bats and primates, that are infected with the virus
Direct contact means that a person’s eye, mouth, nose, or broken skin touches contaminated blood, fluids, or an object. Broken skin may be a cut, scratch, scrape, or open wound.
For most people, the risk of being infected with the Ebola virus is extremely low. The risk increases if you:
- Travel to an area where known Ebola virus disease outbreaks have occurred
- Help take care of someone infected with the virus
- Have direct contact with a person infected with the virus. Even an infected dead body can still spread the virus
Tell your doctor about your symptoms and risk factors (for example, all recent travel). You must have symptoms of Ebola virus disease and have had possible exposure to Ebola virus disease in order to be diagnosed with it. Your doctor can do a blood test to confirm if you have been infected.
If you are diagnosed with Ebola virus disease , you will be put in isolation right away to prevent the virus from spreading.
The is a vaccine to help prevent EBD in people who are 18 years old and older. It is called ERVEBO and can help protect you from getting one type of Ebola virus. It will not protect you from all types of Ebola virus.
Even if you get the vaccine, you should still try to not be exposed to Ebola virus.
It is rare for people in the United States or other developed countries to get infected. You can help lower your risk of infection by doing the following:
- Avoid traveling to areas where known Ebola virus disease outbreaks have occurred.
- Do not touch the blood or body fluids of a person who may be infected with the virus.
- Do not touch the body of a person who has died from Ebola virus disease.
- Do not touch items that may be contaminated with the virus.
People who work in health care settings should be extra cautious around those who are infected or at risk of being infected with the Ebola virus.
Call your doctor right away if you are at increased risk of being infected, you have symptoms of Ebola virus disease. Avoid contact with other people until you get medical care.
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