The arson attack in Rwampara reflects the challenges of health workers trying to curb a rare Ebola virus by using stringent measures that might clash with local customs, such as burial rites. The disease has been spreading for weeks in a region lacking in health facilities and where many people are on the move to escape armed conflicts.
The dangerous work of burying suspected victims is being managed wherever possible by authorities because the bodies of those who die from Ebola can be highly contagious and lead to further spread when people prepare bodies for burial and gather for funerals.
That policy can be extremely unpopular with victims' families and friends, who aren't given the chance to bury their loved ones.
Fear and anger grow
The center in Rwampara was burned by local youths who became angry while trying to retrieve the body of a friend who had apparently died of Ebola, according to a witness who spoke to The Associated Press by telephone.
"The police intervened to try to calm the situation, but unfortunately they were unsuccessful," said Alexis Burata, a local student who said he was in the area. "The young people ended up setting fire to the center. That's the situation."
An AP journalist saw people break into the center and set fire to objects inside and also to what appeared to be the body of at least one suspected Ebola victim that was being stored there. Aid workers fled the treatment center in vehicles.
Deputy Senior Commissioner Jean Claude Mukendi, head of the public security department in Ituri Province, said the youths had not understood the protocols for burying a suspected Ebola victim.
"His family, friends, and other young people wanted to take his body home for a funeral even though the instructions from the authorities during this Ebola virus outbreak are clear," Mukendi said. "All bodies must be buried according to the regulations."
Hama Amadou, field coordinator for the humanitarian organization ALIMA, which had teams working at the center, said later that calm had been restored and that aid teams were continuing their work at the center.
The flash of anger underlined the complications faced by both Congolese authorities and an array of aid agencies trying to stem an outbreak that the World Health Organization has declared a public health emergency of international concern.
The outbreak is bigger than official figures show, WHO says
There are 148 suspected deaths and nearly 600 suspected cases, according to the U.N., with two cases including one death in neighboring Uganda. But the head of the WHO has said the outbreak is almost certainly much larger and has also expressed concern over the speed of the spread.
"We are still in the phase where we are intensifying the investigation, searching for cases," said Jean Kaseya, Director-General of the Africa Centers for Disease Control and Prevention. "I expect the number of cases to increase as surveillance becomes more and more rigorous."
The risk of the outbreak spreading globally is low, the WHO has said, but high regionally with the Ituri Province at the center of the outbreak bordering Uganda and South Sudan.
Health workers and aid groups have said they are in dire need of more supplies and staff to respond. Also, there is no available vaccine or medicine for the Bundibugyo strain responsible for the outbreak.
An expert said this week it would be at least six to nine months before one would be available.
"The priority now is to act quickly and work closely with communities, as the coming days are critical," said Ariel Kestens, the head of the International Federation of Red Cross and Red Crescent Societies delegation in Congo.
Ebola is highly contagious and spreads in people through contact with bodily fluids such as vomit, blood, feces or semen. Symptoms include fever, vomiting, diarrhea, muscle pain and at times internal and external bleeding.
Ebola disease is caused by a group of viruses. Three of them are known to cause large outbreaks: Ebola virus, Sudan virus and Bundibugyo virus, according to the WHO.
The Bundibugyo virus was first identified in a 2007-2008 outbreak in Uganda. This is the largest known outbreak of that species of Ebola.
It has spread to a new province
On Thursday, the M23 rebel group that controls parts of eastern Congo reported that a person had died of the disease near the city of Bukavu, some 500 kilometers (310 miles) south of the outbreak's epicenter in Ituri Province.
It was the first case confirmed in South Kivu Province, and another case was reported there later in the day. Previously, cases had been reported only in Ituri and North Kivu provinces and in neighboring Uganda.
The virus spread undetected for weeks following the first known death in late April as Congolese health authorities tested for a different Ebola virus more commonly responsible for outbreaks in the country. Health officials have not yet found "patient zero," according to the WHO.
The scale of the outbreak so far suggests it "started probably a couple of months ago," said Anaïs Legand, a viral hemorrhagic fevers expert at the WHO.
The outbreak has had international repercussions
India and the African Union said Thursday that the India-Africa Forum Summit, scheduled to be held next week in New Delhi, had been postponed due to the "evolving health situation in parts of Africa."
On Wednesday, Congo's soccer team canceled a three-day World Cup preparation training camp and a planned farewell to fans in the capital Kinshasa because of the Ebola outbreak.
The U.S. government has placed restrictions on any travelers who have visited Congo, Uganda or South Sudan in the previous 21 days, barring foreign visitors among them from entering the U.S. and requiring U.S. citizens and permanent residents to be diverted to Washington Dulles International Airport for screening.
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Pronczuk reported from Dakar, Senegal and Imray from Cape Town, South Africa. Associated Press writers Jamey Keaten in Geneva; Jean Yves Kamale in Kinshasa, Congo; and Wilson McMakin in Dakar, Senegal contributed to this report.