The UN's public health agency has warned that the possibility of the outbreak spreading across the region "remains very high." Health organizations have struggled to contain the outbreak in the conflict-stricken country.
"It is a measure that recognizes the possible increased national and regional risks and the need for intensified and coordinated action to manage them," said the WHO in a statement.
The International Federation of Red Cross and Red Crescent Societies (IFRC) welcomed the decision, saying the move should draw much-needed support to the affected areas.
"While it does not change the reality on the ground for victims or partners engaged in the response, we hope it will bring the international attention that this crisis deserve," said the IFRC.
Despite the existence of a highly-successful vaccine, authorities have been unable to stop the spread of the deadly virusImage: Getty Images/AFP/J.D. Kannah
Under fire
Public health authorities in the DRC have failed to contain the second-deadliest outbreak of Ebola, with more than 1,550 confirmed deaths since it emerged last year. The virus has since been detected in neighboring Uganda.
Emergency response teams have been unable to provide adequate support to combat the outbreak, in part due to poor security in the region and community resistance to their work.
However, the WHO stopped short of requesting travel restrictions and other measures, saying they could further exacerbate the situation.
"WHO does not recommend any restrictions on travel or trade, which rather than stopping Ebola can actually hamper the fight," said WHO chief Tedros Adhanom Ghebreyesus. "Such restrictions force people to use informal and unmonitored border crossings, increasing the potential for the spread of disease."
Ebola is a rare and highly infectious virus, with a death rate of up to 90%, according to the WHO. Symptoms include fever, intense weakness and vomiting. The incubation period ranges from two to 21 days.
Despite the highest safety standards, people in Europe and the US have been infected with the Ebola virus. Protective suits and airports checks are being used to prevent the further spread of the disease.
Image: picture-alliance/dpa/J. Woitas
Protective clothing
Proper protective clothing for doctors and nurses is critical. All exposed skin must be covered with a material that cannot be penetrated by the virus. But the suit alone isn't enough: Proper procedure is also important.
Suiting up
Health care workers must practice correctly putting on a protective suit, as seen here at the special isolation unit in Dusseldorf. New suits are used every time, so there is no risk of infection when getting dressed. Unprotected workers are therefore able to help.
Image: picture-alliance/dpa/Federico Gambarini
Completely separate
The patient rooms in the Dusseldorf isolation unit are completely shielded from the outside world. Air is filtered, and wastewater must go through a separate treatment process. The protective suits, used at all times in the ward, are kept at positive pressure. These measures go further than is necessary: While Ebola can be transmitted by contaminated objects, the virus is not airborne.
After the patient is treated, the entire suit is sprayed from the outside with a disinfectant to kill off any potential viruses. Only after this shower can the suit be removed - cautiously.
Image: picture-alliance/dpa/Sebastian Kahnert
Outside help
When removing the protective suit, health care workers must exercise extreme caution. Using permanently installed protective gloves, outside assistance can be provided without coming into direct contact with the suit. After use, the suit is immediately disposed of and burned.
Image: picture-alliance/dpa/Federico Gambarini
Infected nurses
Despite the high safety standards, a total of three nurses in Spain and the United States have contracted the disease. The circumstances surrounding the infection have not yet been clarified. The nurses' homes (as seen here in Texas) were sealed off and disinfected after the discovery of the transmission.
Image: Reuters/City of Dallas
Protection in Africa
Doctors and nurses in West Africa have now also been outfitted with protective suits. However, these do not always meet the standards deemed necessary for effective protection. Sometimes, small areas of skin are left unprotected, or the material used in the suit is permeable. In addition, putting the suit on and removing it can be risky.
Image: picture alliance/AP Photo
Isolating the dead
Extreme caution is also necessary at the funerals of people who have died of Ebola. A West African tradition, which sees the family of the deceased wash the body has led to many new infections. For mourning friends and family, these strict isolation measures are often hard to understand.
Image: Reuters/James Giahyue
Tent as isolation units
In a region where medical care is extremely underdeveloped, such an outbreak provides a daunting challenge. Infected people, like here in Liberia, are cared for in hastily constructed tents. But even a country like Germany would probably be overwhelmed by such an epidemic. At the moment, the country only has around 50 beds set up in isolation units.
Image: Zoom Dosso/AFP/Getty Images
Incineration instead of sunlight
In some of the affected West African regions, contaminated suits are hung out in the sun in an attempt to disinfect them for further use. But it's much safer to burn the clothing immediately after use, as seen here in Guinea. However, supply shortages and the high prices of suits make such advice difficult to follow. Protective clothing can cost between €30 and €200 ($40-$250).
Image: Cellou Binania/AFP/Getty Images
Airport controls
Air travelers represent the biggest threat when it comes to transmission of the virus over long distances. For this reason, travelers' temperatures are now being monitored at some airports. However, this method does not provide absolute security: Ebola's incubation period is up to 21 days.
