We Must Not Underestimate the Threat of Bundibugyo Ebola Virus Disease

KIU, Main Campus - By May 2026, East Africa once again finds itself confronting the persistent threat of Ebola Virus Disease (EVD), this time driven by the Bundibugyo strain — scientifically known as Bundibugyo ebolavirus (BDBV). While global attention often focuses on the more lethal Zaire strain, the current resurgence of Bundibugyo Ebola Virus Disease (BEVD) in the Democratic Republic of Congo and imported cases into Uganda should serve as a serious public health warning.

Uganda’s Experience: Strength, but Not Immunity

Uganda is not unfamiliar with Ebola outbreaks. In fact, the country has become one of Africa’s most experienced nations in outbreak preparedness and response. Yet experience alone is not immunity. The re-emergence of the Bundibugyo strain reminds us that epidemic preparedness must remain a continuous national priority rather than a reactive exercise triggered only during outbreaks.

The Bundibugyo strain was first identified in 2007 in Bundibugyo District in Western Uganda following an outbreak that puzzled scientists because it differed genetically from previously known Ebola species. Since then, the virus has appeared intermittently within Uganda and neighboring Democratic Republic of Congo, demonstrating its capacity for regional spread, especially within highly mobile border communities.

How BEVD Spreads: Understanding the Transmission Chain

Unlike respiratory infections such as influenza or COVID-19, BEVD is transmitted through direct contact with infected bodily fluids including blood, vomitus, saliva, urine, sweat, and contaminated surfaces. Fruit bats are believed to be the natural reservoir, with spillover occurring through human interaction with infected wildlife. Once introduced into human populations, transmission is amplified through unsafe caregiving practices, delayed diagnosis, inadequate infection prevention measures, and unsafe burials.

The Diagnostic Challenge: Early Symptoms Mimic Common Illnesses

One of the greatest challenges with BEVD is that its early symptoms are deceptively nonspecific. Fever, fatigue, headache, muscle pain, and sore throat are common presentations that mimic malaria, typhoid, or other endemic febrile illnesses. This complicates early detection and delays isolation, especially in low-resource settings where laboratory confirmation may not be immediately accessible.

What the Public Must Understand

Equally important is public understanding of infectivity. Individuals exposed to the virus are not infectious during the incubation period, which ranges from 2 to 21 days. Transmission begins only after symptoms develop. This distinction is critical because misinformation and panic often undermine outbreak control efforts more than the virus itself.

Although the Bundibugyo strain appears less fatal than the Zaire Ebola strain, it remains a severe and potentially deadly disease. More concerning is the fact that there is currently no conventionally approved vaccine or targeted antiviral treatment specifically for this strain. Consequently, outbreak control depends almost entirely on classical public health interventions: rapid case identification, laboratory confirmation, isolation, contact tracing, infection prevention and control, safe burials, and community engagement.

Clinical management largely revolves around aggressive supportive care. Patients require intravenous fluids, electrolyte correction, oxygen therapy, nutritional support, management of secondary infections, and continuous monitoring of organ function. Evidence consistently shows that early supportive treatment significantly improves survival outcomes.

Surveillance Gaps: The Achilles’ Heel of Outbreak Response

Medical interventions alone are insufficient. The major bottleneck in managing current outbreaks remains weak surveillance in insecure and hard-to-reach areas. Movement restrictions, community mistrust, and conflict in affected regions of Eastern Congo continue to disrupt contact tracing and follow-up. Several exposed individuals reportedly became symptomatic and died before they could be isolated, illustrating how quickly gaps in surveillance can reverse containment gains.

The Role of Institutions: Preparedness Must Be Proactive

The response mechanisms must therefore remain proactive rather than complacent. Institutions, universities, healthcare facilities, and communities all have a role to play. Public education on hand hygiene, early reporting of symptoms, avoidance of misinformation, and adherence to infection prevention measures is essential. Risk communication and community engagement should not merely occur during outbreaks but should become integrated into routine public health systems.

Kampala International University (KIU) have already initiated preventive measures, including development and dissemination of prevention guidelines, installation of hand-washing facilities, sensitization campaigns, and collaboration with the Ministry of Health on community mobilization activities.

A Call for Long‑Term Investment in African Public Health Systems

The resurgence of BEVD should also reignite broader conversations about investment in African public health systems. Epidemics repeatedly expose longstanding structural weaknesses including underfunded surveillance systems, shortages of trained personnel, inadequate laboratory networks, and dependency on external emergency funding.

Sustainable preparedness requires long-term domestic investment in public health infrastructure, research, workforce development, and regional disease surveillance partnerships.

Ebola Outbreaks Are Tests of Governance and Trust

Ultimately, Ebola outbreaks are no longer isolated biomedical events; they are tests of governance, communication, trust, and health system capacity. Uganda has demonstrated commendable leadership in past outbreaks, but the evolving nature of viral threats means vigilance can never be relaxed.

The Bundibugyo strain may not currently command global headlines at the scale of previous Ebola epidemics, but underestimating it would be a dangerous mistake. Africa’s preparedness against future epidemics will depend not only on scientific advances but also on whether governments, institutions, and communities sustain collective commitment before the next emergency escalates.

The lesson is simple: preparedness is far less costly than response.

By

Dr. Nicholas Ngomi N (Epidemiologist/Senior Lecturer)

Assoc. Dean School Of Public Health

Kampala International University