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Facts about Ebola virus
The Ebola outbreak in West Africa has been declared a global health emergency by the World Health Organisation (WHO). Ebola, a severe, often fatal viral illness has a death rate of up to 90% and already killed hundreds of people. Here are some facts that will help us understand the disease and ways to protect from the virus.
1. What is Ebola virus disease? Ebola virus disease formerly known as Ebola haemorrhagic fever affects humans and nonhuman primates like monkeys, gorillas, and chimpanzees. The origin of the virus is unknown but fruit bats are considered the likely host of the Ebola virus, based on available evidence.
2. How do people become infected with the virus?
In the current outbreak in West Africa, the majority of cases in humans have occurred as a result of human-to-human transmission. Infection occurs from direct contact through broken skin or mucous membranes with the blood, or other bodily fluids or secretions (stool, urine, saliva, semen) of infected people. Infection can also occur if broken skin or mucous membranes of a healthy person come into contact with environments that have become contaminated with an Ebola patient's infectious fluids such as soiled clothing, bed linen, or used needles.
Generally, a person must come into contact with an animal that has Ebola and it can then spread within the community from human to human.
3. What are typical signs and symptoms of infection?
Sudden onset of fever, intense weakness, muscle pain, headache and sore throat are typical signs and symptoms. This is followed by vomiting, diarrhoea, rash, impaired kidney and liver function, and in some cases, both internal and external bleeding.
4. What is the treatment?
Severely ill patients require intensive supportive care. They are frequently dehydrated and need intravenous fluids or oral rehydration with solutions that contain electrolytes. There is currently no specific treatment to cure the disease.
5. What can I do? Can it be prevented? Is there a vaccine? Currently, there is no licensed medicine or vaccine for Ebola virus disease, but several products are under development.
While initial cases of Ebola virus disease are contracted by handling infected animals or carcasses, secondary cases occur by direct contact with the bodily fluids of an ill person, either through unsafe case management or unsafe burial practices. During this outbreak, most of the disease has spread through human-to-human transmission. Several steps can be taken to help in preventing infection and limiting or stopping transmission.
6. Is it safe to travel during an outbreak? What is WHO's travel advice?
During an outbreak, WHO reviews the public health situation regularly and recommends any travel or trade restrictions, if necessary, and may inform national authorities to implement it. WHO is currently reviewing its recommendations for travel and expects to issue advice in the coming days.
While travellers should always be vigilant with regard to their health and those around them, the risk of infection for travellers is very low since person-to-person transmission results from direct contact with the body fluids or secretions of an infected patient.
Source: World Health Organisation