DR Congo's Ebola outbreak becomes its deadliest with 1,587 dead

By Samuel Abiola · 2026-08-02

The numbers that define a record outbreak

As of 30 July 2026, the Democratic Republic of Congo had recorded 3,605 confirmed Ebola cases, 1,587 confirmed deaths and just 651 recoveries, a case fatality rate of 44 per cent.^[1] Those figures place the 2026 outbreak well ahead of the 2018-2020 epidemic in eastern DRC, which was itself the second-largest Ebola outbreak in recorded history, making this the worst the country has ever documented.

The trajectory is steepening, not flattening. The seven days to 30 July produced 567 confirmed cases and 296 deaths, the highest weekly count since the outbreak was declared.^[1] When the 2018-2020 outbreak was at its most acute, weekly counts rarely approached that level, and responders then had an effective vaccine. This outbreak has no such tool available.

Why the Bundibugyo strain changes everything

The virus driving this outbreak is not the Zaire strain that dominated the last decade of Ebola response. Bundibugyo virus, a distinct Ebola species first identified in Uganda in 2007, has no licensed vaccine and no approved specific treatment.^[2] The tools that contained the 2018-2020 Kivu epidemic, including the Merck vaccine Ervebo and monoclonal antibody treatments, were developed for the Zaire strain and offer no direct protection here.

Vasee Moorthy, WHO's research and development lead, said the most promising candidate is an rVSV Bundibugyo vaccine, the equivalent for this strain of Ervebo, the licensed Merck vaccine used against the more common Zaire Ebola strain since 2019, but it remains months away from clinical trials.^[3] The rVSV platform is well understood from earlier work, which is why WHO regards it as the lead candidate. The gap between "most promising" and "available" is, at present, measured in months at minimum.

The outbreak was formally declared on 15 May 2026, when the ministries of public health of the DRC and Uganda jointly announced an Ebola event caused by Bundibugyo virus.^[4] In just over ten weeks, the DRC's confirmed case count crossed 3,600, a velocity that reflects both the strain's transmission characteristics and the conditions on the ground.

Ituri, Kivu and the collapse of contact tracing

The epicentre sits in Ituri province, which shares a border with South Sudan and Uganda. Sustained transmission has also taken hold in North and South Kivu, provinces where the M23 armed group and DRC government forces have been in active conflict.^[2] Contact tracing, the backbone of any Ebola response, requires the ability to move freely, speak to community members and follow up confirmed cases for 21 days. In M23-controlled territory, that is not reliably possible.

WHO has said response efforts are hampered by insecurity, displacement, high population mobility and porous borders, all of which complicate contact follow-up.^[2] Each of those four factors would be a serious problem in isolation. Together, across a region already carrying one of the world's heaviest humanitarian burdens, they have produced a transmission environment where public health teams cannot reliably close chains before the next generation of cases begins.

Displacement compounds the problem in a specific way. People fleeing conflict carry the virus across health zone boundaries, seeding new clusters in areas with weaker surveillance infrastructure. High population mobility across the Ugandan and Rwandan borders then accelerates geographic spread before any single cluster is contained.

Exported cases: Uganda, France and Germany

Uganda confirmed 20 cases linked to the outbreak and on 28 July 2026 the Ugandan Ministry of Health declared its own Ebola outbreak over.^[5] Dr Chris Baryomunsi, Uganda's Minister of Health, said: "It has been two months since we declared the outbreak and we are now celebrating the discharge of the last patient. This shows that Ebola is defeatable if we adhere to measures and establish strong systems."^[6] Uganda's containment, achieved without a licensed vaccine for this strain, is the clearest proof-of-concept available that non-pharmaceutical interventions can work when conditions allow them to.

France's Ministry of Health confirmed one imported Ebola case on 24 June 2026.^[5] In Germany, two patients whose cases were initially confirmed in the DRC were evacuated for treatment.^[7] On 13 July 2026, a US humanitarian worker who had contracted Ebola in the DRC was medically evacuated to Germany for treatment.^[8] None of those European cases generated sustained local transmission, and the European Centre for Disease Prevention and Control assessed the risk to the general European population as low.

What would change the trajectory

The variables that drive outbreak trajectory, including a vaccine entering trials, a ceasefire stabilising the eastern provinces and a surge in healthcare workers reaching active transmission zones, are not currently in place. WHO has identified the rVSV Bundibugyo candidate as the priority, but according to WHO's research and development lead, it remains months from trials, meaning that even in the most optimistic scenario a vaccine would not be available during the outbreak's current acute phase.^[3]

Uganda's experience offers a partial template. Baryomunsi's government moved quickly on isolation, contact tracing and community engagement, holding the country's case count to 20 and extinguishing the outbreak within two months.^[6] Replicating that in Ituri, North Kivu or South Kivu would require conditions that do not presently exist, and the conflict geography that defines eastern DRC is not incidental to this outbreak.

The weekly case count remains the clearest leading indicator of whether transmission is accelerating or slowing. At 567 cases in the week to 30 July, it is still accelerating.^[1]

Samuel Abiola

Samuel Abiola writes about inequality and social policy. He works close to the research and is interested in what the numbers mean for the people counted in them.