What is Ebola and why is stopping the latest outbreak so difficult?
10 hours ago
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The current Ebola outbreak in the Democratic Republic of Congo continues to spread fast and has been described as the third-worst on record by the head of the World Health Organization (WHO), Dr Tedros Adhanom Ghebreyesus
Getting the spread of the deadly virus under control is challenging because it involves a rare species of Ebola for which there is no vaccine, and the epicentre is in an area affected by conflict
What is Ebola and what are the symptoms?
Ebola is a rare but deadly disease caused by a virus
Ebola viruses normally infect animals, typically fruit bats, but outbreaks among humans can sometimes start when people eat or handle infected animals
It takes two to 21 days for symptoms to appear. They come on suddenly and start like the flu or malaria, 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
Ebola outbreaks used to be small and contained to remote rural areas. However, urbanisation is pushing larger populations closer to these natural reservoirs of Ebola and increasing the risk of transmission
Why is this Ebola outbreak different and is there a vaccine?
This outbreak is caused by the rare Bundibugyo species of Ebola, which had not been seen for over a decade
Named after a district in Uganda where it was first detected, Bundibugyo has only caused two previous outbreaks – in 2007 and 2012
One study showed that it killed about a third of those infected, far less than the more common Zaire (66.6%) and Sudan (48.5%) species. About 38% of those known to have been infected in the current outbreak have died
Initial blood tests for Ebola in the affected areas were negative as they were designed to identify the more common form of the disease
In July, the UK’s medicines regulator, the MHRA, said it had given permission for the first human trials of a vaccine for Bundibugyo to go ahead
It was created by a team from the University of Oxford based on the same technology used in the Oxford-AstraZeneca Covid vaccine
It took scientists just eight weeks to develop the new jab after plugging in genetic code from the Bundibugyo species of Ebola
It will now be tested on 50 volunteers from Oxford aged 18 to 55 to see whether it triggers the correct antibody response without causing significant side effects
Three other groups are also developing different vaccines for Bundibugyo although they have not yet entered clinical trials
While treatments are available for other species of the Ebola virus, no drugs have been specifically approved to treat those infected with Bundibugyo
The WHO is sponsoring a separate clinical trial in the DRC to see whether two existing antiviral therapies can improve survival rates
The two drugs selected as the most promising are an experimental monoclonal antibody called MBP134 and remdesivir, an injection into a vein, which is also used to treat Covid
A further complication is that the outbreak is taking place in a conflict zone, with a quarter of million people displaced from their homes and people moving across porous bordersinto neighbouring countries
Trish Newport, from medical charity Doctors Without Borders, who is heavily involved in efforts to tackle the outbreak, told the BBC World Service that territory constantly changed hands between different armed groups, making it difficult for emergency response teams to simply drive to Ebola hot-spots
She pointed out that a further problem was bad roads, with a 90km (56-mile) journey from Bunia city to Mongbwalu, one of two gold-mining towns where the majority of cases have been reported, taking more than three hours
However, the WHO’s declaration in May that this outbreak was a public health emergency of international concern did not mean we were in the early stages of a Covid-style pandemic. The risk Ebola poses outside Central and East Africa is minimal
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How did the current Ebola outbreak start?
The first known case was a nurse who developed symptoms on 24 April, which means the virus had been spreading undetected for weeks
The nurse died in Bunia, the capital of eastern DR Congo’s Ituri province, according to Congolese Health Minister Samuel Roger Kamba
The victim’s body was repatriated to Mongbwalu
Kamba said one of the reasons the virus spread so quickly was the number of people exposed to the body during the funeral ceremony
Africa’s public health agency, the Africa Centres for Disease Control and Prevention (Africa CDC), told the BBC World Service that funerals were a particular concern, as they also helped spread the disease during previous outbreaks
Africa CDCdirector Dr Jean Kaseya said public health information campaigns were “providing information on how to handle funerals” and the importance of basic hygiene and sanitation, as well as providing protection measures for health workers
Kamba said there had been delays in reporting Ebola cases because infected communities believed the disease to be “witchcraft” or a “mystical illness”, resulting in people seeking treatment from prayer centres and witchdoctors rather than hospitals
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How many Ebola cases have been reported and where are they?
On 16 July, officials said there had been 2,073 confirmed cases and 796 confirmed deaths from the virus in DR Congo
There have also been 377 recoveries from Ebola so far, including four nurses whose discharge from hospital was celebrated at a special ceremony
Ituri province is the epicentre of this outbreak and accounts for the vast majority of confirmed infections
Cases have also been confirmed in North Kivu (189) and South Kivu (3), provinces partly controlled by the rebel AFC-M23 alliance. These discoveries signalled the outbreak’s spread from its epicentre
The last patient being treated for Ebola in neighbouring Uganda was discharged from hospital on 16 July. Up to that point, the country had recorded 20 confirmed cases – with most having travelled from DR Congo – and two deaths. Uganda must now go through 42 days without another confirmed case in order to be declared Ebola-free
What is being done in DR Congo to tackle the current Ebola outbreak?
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Mass gatherings have been banned in the provinces with confirmed cases – Ituri, North Kivu and South Kivu – as well as three neighbouring provinces – Tshopo, Haut-Uele and Bas-Uele
Capital city Kinshasa – which has no confirmed cases and is located some 1,800 km (1,100) miles from the outbreak – has also been ordered to ban mass gatherings
The Congolese government has established four laboratories in Ituri – in Bunia, Mongbwalu, Beni and Aru – which can test blood samples for the Bundibugyo species of Ebola. Results can now be delivered within 24 hours, removing earlier delays
Surveillance systems, contact tracing and the treatment infrastructure, with dedicated centres in several affected towns, have also been expanded, according to the health minister
The WHO has dedicated $3.9m (£2.9m) to tackling the outbreak, while Africa CDC has announced a $319m budget
A toll-free number, 151, has been provided for reporting symptoms and people are being reminded to:
- avoid contact with bodies of people who died with symptoms, or with dead animals
- not eat raw meat, as undercooked food may transmit the virus
- practise social distancing.
How have the rebels responded to the latest Ebola outbreak?
The AFC-M23 group has created an Ebola response team in an effort to prevent transmissions in the areas it controls
Only four cases have been recorded in that territory – two original cases, people who had travelled from Ituri, and two others who were infected later, Dr Freddy Kaniki, the Ebola response co0ordinator in the rebel-held regions told the BBC’s Newsday programme in July
The 400 people they had been in contact with have also been traced and currently no active cases, he added
While UN organisations, including the WHO and children’s agency Unicef, had been helping, Kaniki said that there was no co-ordination with the government in Kinshasa
What’s the fighting in DR Congo all about?
Trump’s ‘historic’ peace deal for DR Congo shattered after rebels seize key city
What are Rwanda and other countries doing about the Ebola outbreak?
Rwanda closed its borders with DR Congo earlier on in the outbreak. According to Congolese media, authorities began to reopen parts of the border late in June following a lull in local infections
Uganda has temporarily suspended flights, buses and all other public transport crossing the border with DR Congo
After the first cases were detected in Uganda, authorities there told people to avoid hugging and shaking hands
Several other African countries are tightening border screenings and bolstering health facilities
The US has extended travel restrictions on its citizens who have been to DR Congo. Anyone who wants to return home must spend 21 days in a third country before being allowed into America
Previously, they had been able to enter at select airports, where they went through a screening process. Measures preventing non-US citizens who had been to DR Congo from entering America were already in place
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