People living close to the epicentre of a deadly Ebola outbreak have told the BBC of their fear. as the World Health Organization (WHO) warned cases may be spreading faster than originally thought.
One man in the Democratic Republic of Congo's north-eastern Ituri province, the epicentre of the outbreak, said infected people were dying "very fast",. added: "Ebola has tortured us."
The virus has killed 131 people in the DR Congo,. officials say more than 513 cases are now suspected in the country. One person has died in neighbouring Uganda.
The WHO's Dr Anne Ancia told the BBC that the more the UN agency investigates the outbreak. the clearer it becomes cases have spread to other areas.
Modelling by the London-based MRC Centre for Global Infectious Disease Analysis released on Monday suggested there had been "substantial" under-detection,. that it could not rule out there had already been more than 1,000 cases.
The study suggested that the current outbreak is "larger than currently ascertained" and that its "true magnitude remains uncertain".
A man who spoke to BBC News. identified himself as Bigboy said people are "really scared" and doing what they can to protect themselves.
He said locals are taking precautions such as washing hands with clean water,. added that he wished they could get access to other protective supplies such as face masks.
Another Ituri local, Alfred Giza, said people in the community are aware of the threat. waiting to receive face masks to protect themselves, but that he would not know what to do if a family member or friend contracted the disease.
The Red Cross warned that Ebola can escalate quickly if cases are not identified early, communities lack information. health systems are overwhelmed, adding "we are seeing all those conditions" in the current outbreak.
On Tuesday, DR Congo President Félix Tshisekedi called for "calm". urged Congolese citizens to remain vigilant, after holding a crisis meeting on Monday evening.
WHO chief Tedros Adhanom Ghebreyesus, who declared the outbreak an international emergency last week, said he was "deeply concerned about the scale. speed of the epidemic".
It is feared the outbreak may have been ongoing for several weeks before it was first detected on 24 April.
There is no vaccine for the strain of Ebola virus fuelling the latest rise in cases,. the WHO is evaluating whether other drugs may provide protection.
Speaking to BBC Newsday, Ancia said DR Congo's Ituri province was a "very unsecured area with lots of movement of population", making it difficult for the agency to investigate. help control the disease.
She continued: "The more we are investigating this outbreak, the more we realise that it has already disseminated at least a little bit across border. also in other provinces."
The outbreak has spread to the province of South Kivu. where the population has been affected by a humanitarian crisis for many years, she added.
There has also been a case in eastern DR Congo's biggest city, Goma, which has a population of around 850,000 people. is under the control of Rwandan-backed rebels.
High levels of insecurity in several provinces mean people move around often, increasing the risk. spread of the virus, she said.
Several African countries are taking precautions by tightening border screenings and preparing health facilities. Neighbouring Rwanda has also closed its borders with the DR Congo. Uganda has told people to avoid hugging and shaking hands.
An American citizen,believed to be missionary group doctor Peter Stafford. is being evacuated from the DR Congo after developing symptoms over the weekend.
Germany's health ministry told the BBC a US citizen was being taken to the country for treatment.
The US Centers for Disease Control. Prevention (CDC) said it was working to evacuate at least six other Americans who were exposed.
The WHO. other agencies are working with governments and communities to try to stop the spread of the virus, urging residents to follow preventative measures and report to the nearest health facility if they experience any symptoms.
Ebola is caused by a virus and initially causes symptoms similar to the flu, with fever, headache and tiredness.
As the disease progresses, vomiting and diarrhoea develop and it can lead to organ failure. Some, but not all, patients develop internal and external bleeding.
The virus spreads from one person to another by contact with infected bodily fluids such as blood or vomit.
The Bundibugyo strain fuelling this rise in cases is rare,. has previously only caused two outbreaks, when it killed about a third of those infected.
Between 2014. 2016, more than 28,600 people were infected by Ebola in West Africa, the largest outbreak of the virus since its discovery in 1976.
It was caused by the Zaire strain, for which there is an approved vaccine.
The disease spread to a number of countries in West Africa. beyond, including Guinea, Sierra Leone, the US, UK and Italy, killing 11,325 people.
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