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Ebola basics: What you need to know Ebola basics: What you need to know
(1 day later)
The Ebola virus has now claimed nearly 4,000 lives during the current epidemic in West Africa, the largest outbreak since the virus was discovered nearly 40 years ago. The Ebola virus has claimed more than 4,000 lives during the current epidemic in West Africa, the largest outbreak since the virus was discovered nearly 40 years ago.
According to the World Health Organization, more than 8,000 people have been infected during the outbreak. According to the World Health Organization (WHO), nearly 9,000 people have been infected during the outbreak.
What is Ebola?What is Ebola?
Ebola is a serious infectious illness which often proves fatal. Different strains kill between 50% and 90% of those infected. Ebola is a serious infectious illness which often proves fatal.
The disease is caused by the Ebola virus, which is thought to have originated in fruit bats. The virus, which is thought to have originated in fruit bats, was first detected in 1976 in an outbreak near the Ebola River in what is now the Democratic Republic of Congo.
Ebola was first detected in 1976 in an outbreak near the Ebola River in what is now the Democratic Republic of Congo.
How is the disease caught and spread?How is the disease caught and spread?
People are infected when they have direct contact through broken skin, or the mouth and nose, with the blood, vomit, faeces or bodily fluids of someone with Ebola.People are infected when they have direct contact through broken skin, or the mouth and nose, with the blood, vomit, faeces or bodily fluids of someone with Ebola.
The virus can be present in urine and semen too.The virus can be present in urine and semen too.
Infection may also occur through direct contact with contaminated bedding, clothing and surfaces - but only through broken skin.Infection may also occur through direct contact with contaminated bedding, clothing and surfaces - but only through broken skin.
The disease is not airborne, like flu. Very close direct contact with an infected person is required for the virus to be passed to another person.The disease is not airborne, like flu. Very close direct contact with an infected person is required for the virus to be passed to another person.
It can take up anything from two to 21 days for humans with the virus to show symptoms.It can take up anything from two to 21 days for humans with the virus to show symptoms.
People are not infectious until the symptoms develop.People are not infectious until the symptoms develop.
People are infectious as long as their blood and secretions contain the virus - in some cases, up to seven weeks after they recover.
World Health Organization guidance on Ebola
What are the symptoms?What are the symptoms?
The early symptoms are a sudden fever, muscle pain, fatigue, headache and sore throat.The early symptoms are a sudden fever, muscle pain, fatigue, headache and sore throat.
This is followed by vomiting, diarrhoea, a rash and bleeding - both internal and external - which can be seen in the gums, eyes, nose and in the stools.This is followed by vomiting, diarrhoea, a rash and bleeding - both internal and external - which can be seen in the gums, eyes, nose and in the stools.
Patients tend to die from multiple organ failure or dehydration.Patients tend to die from multiple organ failure or dehydration.
How is it treated?How is it treated?
There is no proven cure for Ebola.There is no proven cure for Ebola.
Severely ill patients need to be rehydrated quickly using intravenous fluids. They should be isolated from other people and given intensive care by medical experts.Severely ill patients need to be rehydrated quickly using intravenous fluids. They should be isolated from other people and given intensive care by medical experts.
Potential vaccines are being tested. If the trials are successful they would be used to protect healthcare workers first.Potential vaccines are being tested. If the trials are successful they would be used to protect healthcare workers first.
Experimental drugs such as ZMapp have also been used, but they have not saved all patients. Experimental drugs such as ZMapp have also been used, but their effectiveness has not been proved.
Blood transfusions from survivors are also being tried as a potential therapy.Blood transfusions from survivors are also being tried as a potential therapy.
The medical charity Medecins Sans Frontieres (MSF) says this outbreak comes from the deadliest and most aggressive strain of the virus.
It is not known which factors allow some people to recover while most succumb.
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Who is at risk?Who is at risk?
Anyone in close contact with patients with Ebola is at risk. Anyone in close contact with Ebola patients is at risk.
Healthcare workers treating patients, including doctors and nurses, are using protective clothing such as full-body suits and goggles, but hundreds have still died. They are at high risk. Healthcare workers are using protective clothing such as full-body suits and goggles, but hundreds have still died.
Family members of patients are also at risk. In West African funerals, it is traditional for mourners to have direct contact with the body of the dead person, washing and embracing them before burial.Family members of patients are also at risk. In West African funerals, it is traditional for mourners to have direct contact with the body of the dead person, washing and embracing them before burial.
But the Ebola virus is still dangerous and present in the body after death. Prompt and safe burials are now being urged.But the Ebola virus is still dangerous and present in the body after death. Prompt and safe burials are now being urged.
MSF has been trying to make people aware of how their treatment of dead relatives might pose a risk to themselves. However, it is a very difficult message to get across.
What precautions can be taken?
Avoid contact with Ebola patients and their bodily fluids, the WHO advises. Do not touch anything - such as shared towels - which could have become contaminated in a public place.
Carers should wear gloves and protective equipment, such as masks, and wash their hands regularly.
The WHO also warns against consuming raw bushmeat and any contact with infected bats or monkeys and apes. Fruit bats in particular are considered a delicacy in the area of Guinea where the outbreak started.
In March, Liberia's health minister advised people to stop having sex, in addition to existing advice not to shake hands or kiss. The WHO says men can still transmit the virus through their semen for up to seven weeks after recovering from Ebola.
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Where is Ebola a problem?Where is Ebola a problem?
Guinea, Liberia and Sierra Leone in West Africa are the countries worst affected by this outbreak, which came to light in March 2014.Guinea, Liberia and Sierra Leone in West Africa are the countries worst affected by this outbreak, which came to light in March 2014.
There have also been a small number of cases in Nigeria and Senegal, and one imported case in the US. There is also a confirmed case of Ebola in Spain. It started in Guinea, which has never before been affected, and quickly spread to urban areas.
All are linked to the current outbreak. From Nzerekore, a remote area of south-eastern Guinea, the virus spread to the capital, Conakry, and neighbouring Liberia and Sierra Leone.
Nigeria and Senegal have confirmed a small number of cases, and the US has had two confirmed cases.
In October, a nurse in Spain became the first person to contract the virus outside of West Africa.
Ebola deaths since 1976
Why is this outbreak particularly bad?Why is this outbreak particularly bad?
The virus has taken hold in major urban areas this time as opposed to remote, rural areas. In towns and cities which are heavily populated, people move around more and the disease is more easily spread. The virus has taken hold in major urban areas this time, allowing it to spread more easily.
Although the early cases were in Guinea, the virus quickly spread across borders to neighbouring Sierra Leone and Liberia, making the disease more difficult to contain. The countries most severely affected by the disease have weak health systems. They are short of qualified doctors and nurses, and lack the appropriate equipment and resources to combat the virus.
The countries most severely affected by the disease in West Africa also have weak health systems. They are short of qualified doctors and nurses, and lack the appropriate equipment and resources to combat the virus, unlike in the UK.
As a result, this is the largest and most complex Ebola outbreak since the virus was discovered.As a result, this is the largest and most complex Ebola outbreak since the virus was discovered.
There have been more cases and deaths in this one than all other outbreaks combined.There have been more cases and deaths in this one than all other outbreaks combined.
Ebola patients treated outside West Africa*
*In all cases but two, first in Madrid and later in Dallas, the patient was infected with Ebola while in West Africa.