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Ebola virus disease is a serious illness that originated in Africa, where a large outbreak occurred in 2014-15. In June 2016, the outbreak was officially declared over.
The 2014-15 outbreak of Ebola mainly affected three countries in west Africa: Guinea, Liberia and Sierra Leone. Some cases also occurred in parts of central Africa.
Around 28,000 cases and more than 11,000 deaths were reported by the World Health Organization. This was the largest known outbreak of Ebola.
There's still a small chance occasional cases of Ebola may occur in Africa as the virus is present in several countries there, but the risk for people travelling to Africa is minimal.
The Foreign and Commonwealth Office no longer advises against all but essential travel to previously affected areas.
People who remain most at risk are those who care for infected people or handle their blood or fluid, such as hospital workers, laboratory workers and family members.
The risk of an Ebola outbreak occurring in the UK remains negligible.
A person infected with Ebola virus will typically develop:
These symptoms start suddenly between 2 and 21 days after becoming infected.
Get medical advice as soon as possible if you become ill while travelling abroad. Contact your doctor if you become ill after returning home.
Always remember to mention your recent travel history, as this will help identify what the problem could be.
Sometimes your doctor may want to take a sample of your blood, urine or stools so it can be checked for any infections.
The Ebola virus is spread in the blood, body fluids or organs of a person or animal with the infection.
For example, it can be spread by:
Ebola can't be caught through routine social contact, such as shaking hands, with people who don't have symptoms.
There's currently no licensed treatment or vaccine for Ebola, although potential new vaccines and drug therapies are being developed and tested.
Any area affected by an outbreak should be immediately quarantined, and people confirmed to have the infection should be treated in isolation in intensive care.
Dehydration is common, so fluids may be given directly into a vein. Blood oxygen levels and blood pressure also need to be maintained at the right level, and body organs supported while the person's body fights the infection.
Healthcare workers need to avoid contact with the bodily fluids of their infected patients by taking strict precautions, such as wearing protective equipment.
Ebola virus disease is sometimes fatal. The sooner a person is given care, the better the chance they'll survive.
The Ebola outbreak in west Africa is now over. The risk of catching the infection while travelling to previously affected countries is very small.
But if you're visiting one of these areas, it's still a good idea to follow these simple precautions to minimise your risk of picking up potentially serious infections:
You can check the advice for an area you're planning to visit using the Travel Health Pro country information.
Important: Our website provides useful information but is not a substitute for medical advice. You should always seek the advice of your doctor when making decisions about your health.