A major challenge during an outbreak is isolating infected individuals and identifying their close contacts. When containment is successful, pathogen transmission is limited strictly to known contacts. For this reason, infection preventionists (IPs) meticulously perform contact tracing following a facility exposure. They then monitor exposed individuals through the incubation period after their last contact.

On October 5, 2026, in Kenya, a patient died after becoming infected with Bundibugyo virus disease (BVD) in the Democratic Republic of the Congo (DRC). How did this happen?

The short answer: Nobody knew he had Ebola during his travels. The longer answer reveals a series of system gaps and missed opportunities that IPs will readily appreciate.

The patient was a 40-year-old Kenyan citizen who had been living in the DRC^1-3 for around 7 years.⁴ His story begins around August 26 in the city of Buta in the province of Bas-Uélé (Figure 1).⁴ According to Kenya’s Ministry of Health and WHO, he fell ill about a month before his death and had been treated at several health facilities in the DRC.^1,2,5

His symptoms began around the middle of September as nonspecific malaise, and he received care at home.⁴ A couple of days later, he was admitted to a health facility with a fever and skin rash. He was diagnosed with a skin infection.⁴ He then flew to Kisangani in the province of Tshopo, where he sought medical care until October 1.⁴ He flew to Beni, in the province of North Kivu, on October 1 and traveled by road into Uganda the same day. He later boarded another plane in Uganda and flew to Kenya on October 3.⁴ When he landed, a relative drove him directly to a hospital in Nairobi, where he was placed in isolation and assessed.^1,5

Upon admission in Kenya, his symptoms included fever, chills, fatigue, muscle pain, painful swallowing, sore throat, and bleeding under the skin at injection sites.¹ The medical team tested him for BVD based on his signs, symptoms, and travel history.¹ He tested positive on October 5 and died that night.^2,5

This patient was Kenya’s first confirmed imported case,^1-3,5 and Kenya is the fourth country to confirm BVD.² The other 3 are the DRC, Uganda, and France.²

As an IP, I had so many questions as I read this account.

Airport Screening vs. Symptom Masking

In May, Uganda closed its border to travel from the DRC, except for essential traffic. Those who were permitted to enter from the DRC were required to self-quarantine for 21 days.⁶ Uganda also requires all travelers entering the country to complete an online health and travel questionnaire.⁷ According to Uganda’s director general of health services, screening teams recorded a normal temperature when he departed from Entebbe airport.⁸ Kenya’s cabinet secretary for health said he did not declare his illness when he entered Uganda or when he boarded his flight.⁹ When he landed in Kenya on October 3, he passed normal screening with a thermal scanner.^9,10

Kenyan health officials have offered a working theory that medication lowered the patient’s temperature and masked some of his symptoms, allowing him to pass the automatic thermal scanners at the airport undetected.^9-11

By the time he was picked up at the airport in Kenya, he had cleared security at airports in 2 countries that same day.^8,10 Yet he died approximately 58 hours after the plane landed.^1,4

I cannot help but wonder how he was able to board a plane and leave the airport, considering he went directly to the hospital and how severe his symptoms were when he was assessed.

Mapping the Exposure Window

The incubation period for Ebola ranges from 2 to 21 days.⁵ The World Health Organization (WHO) presumes he contracted BVD in a health facility or community while seeking care for another ailment.⁵ The patient had spent much of the 3 weeks before his death seeking medical care.⁴

Interestingly, the patient visited and received medical care in provinces with relatively low case counts. As of October 8, Bas-Uélé had reported only 10 confirmed cases and Tshopo only 51 (Figure 2).³ Both of these provinces are outside the epicenter of this outbreak.⁵

Based on the incubation period and timeline, I believe he most likely contracted Ebola while seeking medical care in Tshopo. It is unclear as of this writing what his condition was during his more than 10 days of care in Tshopo, or the circumstances under which he left. What is clear is that he was in the late stage of illness when he landed in Kenya, when Ebola is most contagious.

This takes us to the next burning question: Whom might this patient have exposed?

Hospital Admission and Immediate Contact Tracing

What is certain is that he was admitted to the hospital in Kenya on October 3, isolated and assessed, and then moved to a dedicated isolation unit.¹ A specimen was collected on October 5 to test for BVD, and he died that night.^1,4,5

During his admission, it was noted that he bled at the injection sites.¹ The 28 contacts Kenya listed include family members and the health care workers (HCWs) who attended to him.^1,2 It is unclear when BVD was first suspected. Per health officials in Kenya, he was isolated on arrival.¹ Africa CDC says HCWs suspected it later on.⁴ With HCWs among the 28 contacts, it raises questions about whether there was a delay in recognizing that this patient was a suspected Ebola patient and what personal protective equipment (PPE) the staff was wearing during the 2 days before his death.

In addition to the 28 contacts, Kenyan health officials are tracing 23 airline passengers and 4 crew members. Quarantine arrangements are underway for those considered at risk.^1,2

IPC Vulnerabilities and the Diagnostic Dilemma

Did infection prevention and control (IPC) fail somewhere along his route? That is the question I am left with, and there is no clear answer.

WHO notes that it is difficult to distinguish BVD from malaria without laboratory testing,⁵ and it remains unclear whether or when the patient displayed symptoms during transit.⁵ When questioned about potential misdiagnosis, Africa CDC emphasized that early symptoms are nonspecific.⁴ However, when IPC measures are inadequate, healthcare-associated transmission can be amplified.⁵

Official statements leave several critical questions unanswered:

• Whether the patient was evaluated or tested for Ebola between September 15 and his departure from Tshopo on October 1.
• Whether any authority assessed IPC practices in Bas-Uélé or Tshopo provinces, or during his initial hours of care in Kenya.
• What specific PPE or transmission-based precautions did health care workers use while caring for him before diagnosis?
• Whether he was formally admitted to Tshopo, and if so, whether he was properly discharged or left against medical advice.
• What quarantine requirements or travel guidance, if any, were communicated to him before border crossings?

Cross-Border Interventions and Containment Strategy

To reconstruct the patient’s movements and support contact tracing, Africa CDC met with health officials across the DRC, Uganda, and Kenya.⁴

Using information from the DRC, investigators are mapping the flights he took and the health facilities he visited to identify potential exposures.⁴ In Uganda, teams are tracing his route, quarantining high-risk contacts while monitoring those at lower risk. Africa CDC and WHO noted this effort was underway as of early October.^4,5 Kenya activated its public health emergency operations center, national task force, and Ebola response plan.⁴ Beyond designating a facility to quarantine exposed individuals, officials oversaw a safe and dignified burial on October 6.^2,4,5 Kenya’s Ministry of Health has urged health care workers to stay vigilant and maintain strict IPC practices.¹

Closing the Gaps Before the Next Cross-Border Threat

Containment during an outbreak relies on early identification and rapid isolation. When a screening and surveillance system relies on thermal scanners and sick patients self-reporting illness, infectious patients will cross international borders. This places a considerable burden on front-line clinical teams and IPs to identify risks that other safeguards have missed.

This tragic case illustrates how easily systemic gaps can compromise containment efforts. For IPs, exacting contact tracing remains our most vital tool, because containment can fail.

When IPC practices succeed, our staff and patients stay safe. The daily work of aligning travel screening with current global threats, training staff on proper PPE use, empowering front-line teams to initiate transmission-based precautions, and embedding a culture of hand hygiene is far more than just administrative tasks. Of the 28 contacts identified in this case, most were HCWs, a stark reminder of what is at stake.⁹ The essential barriers we educate, train, and advocate for every day are what prevent an unexpected Ebola patient from becoming a facility-wide outbreak.

References

1. Kenya confirms first imported case of Bundibugyo Ebola virus disease. Kenya Ministry of Health. October 7, 2026. Accessed October 10, 2026. https://www.health.go.ke/kenya-confirms-first-imported-case-bundibugyo-ebola-virus-disease
2. Kenya confirms first imported case of Bundibugyo virus disease; WHO supports control efforts. World Health Organization Regional Office for Africa. October 6, 2026. Accessed October 10, 2026. https://afro.who.int/countries/kenya/news/kenya-confirms-first-imported-bundibugyo-virus-disease-case-who-supports-control-efforts
3. Ebola disease outbreak in the Democratic Republic of the Congo. European Centre for Disease Prevention and Control. Updated October 8, 2026. Accessed October 10, 2026. https://www.ecdc.europa.eu/en/ebola-outbreak-democratic-republic-congo-and-uganda
4. Africa CDC special briefing on Ebola outbreak response. Africa Centres for Disease Control and Prevention. YouTube. Published October 8, 2026. Accessed October 10, 2026. https://www.youtube.com/live/W7sIpyxb4lE
5. Ebola disease caused by Bundibugyo virus – Democratic Republic of the Congo. World Health Organization. Disease Outbreak News. October 8, 2026. Accessed October 10, 2026. https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON619
6. Health alert: US Embassy Kampala, Uganda (May 28, 2026). US Embassy in Uganda. May 28, 2026. Accessed October 10, 2026. https://ug.usembassy.gov/health-alert-u-s-embassy-kampala-uganda-may-28-2026/
7. Travellers: declaration & self-reporting. Uganda Ministry of Health. June 11, 2026. Accessed October 10, 2026. https://evd-daily.health.go.ug/updates/traveller-arrival-declaration
8. Uganda remains Ebola-free after confirmed case passes through country: health ministry. Xinhua. October 7, 2026. Accessed October 10, 2026. https://english.news.cn/africa/20261007/47d16a61edd74586a011d77722276cf4/c.html
9. Mwenda K. Duale: Ebola patient did not declare illness on health declaration form. People Daily. October 7, 2026. Accessed October 10, 2026. https://peopledaily.digital/news/duale-ebola-patient-did-not-declare-illness-on-health-declaration-form
10. Kimani B. Ebola patient may have masked symptoms to pass JKIA screening, DG Amoth says. Citizen Digital. October 6, 2026. Accessed October 10, 2026. https://citizen.digital/article/ebola-patient-may-have-masked-symptoms-to-pass-jkia-screening-dg-amoth-says-n391552
11. Makhanu M. Govt explains how Ebola patient passed screening at Kenyan border. People Daily. October 6, 2026. Accessed October 10, 2026. https://peopledaily.digital/news/govt-explains-how-ebola-patient-passed-screening-at-kenyan-border