DRC Ebola outbreak spreads to sixth province, on pace to become deadliest ever

A man traveled from one province to another in the Democratic Republic of the Congo and died. That single journey, from Isiro in Haut-Uele to Buta in Bas-Uele, marked the arrival of Ebola in a sixth province—a threshold that officials now recognize as a turning point in an outbreak spiraling faster than any in recorded history.

The numbers tell the story of acceleration. More than 2,100 people have died from over 4,500 confirmed cases, according to figures released on Tuesday. At this same stage in the 2014-16 West African outbreak, which killed at least 11,000 people and held the record for deadliest, only 755 cases had been recorded. The current outbreak is moving three times faster. On Wednesday, the director general of the World Health Organization said plainly that the DRC outbreak was on track to surpass that grim milestone.

What makes this outbreak particularly difficult to contain is the virus itself. The Bundibugyo strain responsible for the current crisis has no approved vaccines or treatments. Researchers sequencing genomes from infected patients discovered this strain is genetically distinct from previous Bundibugyo outbreaks in 2007 and 2012, suggesting the virus jumped from an animal to a human relatively recently—likely in February, months before the outbreak was officially declared on May 15. Clinical trials for two possible treatments began last month in Ituri province, and two vaccines developed specifically for this strain are now being tested on people for the first time. But these are early efforts in a race against a virus that spreads through body fluids, contaminated surfaces, and contact with the dead.

The geography of the crisis spans six of the DRC's 26 provinces, concentrated along the country's north-eastern border. More than 3,400 cases have been recorded in Ituri province alone, where the outbreak began. Uganda has reported 20 cases, all in Kampala, with the last case appearing on June 21 and no community transmission documented since. But in the DRC itself, between 60 and 70 percent of new cases are occurring outside the network of monitored contacts—people health authorities are actively tracking. The virus is moving faster than the response can follow. As the WHO's regional director for Africa put it this week: "We are chasing the virus; the virus is ahead of us."

The outbreak is unfolding amid cascading obstacles. Some health workers have gone unpaid for three months, leading to strikes and temporary closures of treatment centers. Global development aid has been cut. Rebel groups pose threats to health infrastructure and personnel. Communities traumatized by previous crises are skeptical of official messaging. Misinformation circulates claiming Ebola is not real. On Thursday, health workers at the Nizi treatment center in Ituri province walked out, unable to work without pay.

There is a narrow window for hope. If the pandemic response is implemented simultaneously across all five transmission zones, WHO officials said this week, a turnaround could come within three months. But even under that optimistic scenario, the outbreak would not peak for six months, and could persist for nine to 12 months total. Officials are also concerned the virus may be mutating; the Africa CDC is planning further studies with the WHO to investigate. The true scope of the outbreak remains unknown, obscured by the months that passed between when the virus likely began spreading in February and when it was officially recognized in May.

What happens next depends on whether the coordination and resources can be mobilized quickly enough. The virus is moving. The question is whether the response can catch up.