Two confirmed Ebola patients — one now dead in Kenya, one isolated in Nigeria — passed through Uganda's Entebbe International Airport on the same day, October 3. Uganda maintains it has zero active cases. The Africa CDC is now investigating whether the two patients crossed paths at the airport, though no transmission link has been established. The Nigerian case has become the more contested one. Uganda's Health Ministry said the patient, a Swiss national of Ugandan origin married to a Swiss diplomat in Abuja, had traveled to eastern DRC for business before transiting Uganda without symptoms. Switzerland flatly contradicted this account. "She and her husband did not travel to the Democratic Republic of the Congo," the Swiss Federal Department of Foreign Affairs told Reuters. The WHO and Africa CDC confirmed they had received no evidence supporting the DRC travel claim either. If Switzerland's account holds, the question of where the woman contracted Ebola becomes significantly harder to answer — and significantly more uncomfortable for Uganda. She developed symptoms on October 7, four days after passing through Entebbe. The 2-to-21-day incubation window means exposure could have occurred in Uganda itself. Nigeria has identified 44 contacts including healthcare workers, caregivers, and fellow travelers. Kenya's investigation adds another thread. Its first confirmed Ebola patient, who died in Nairobi on October 5, had traveled from the DRC through Uganda and also passed through Entebbe on October 3. Kenyan authorities are now searching for a Ugandan national identified as a contact of the deceased — a man known by name and passport number but reachable only via a South Sudanese phone number. Being untraced does not mean infected, but the gap in contact tracing is exactly the kind of failure that lets outbreaks metastasize. The structural problem is visible in the architecture of the investigation itself. Three countries — Uganda, Kenya, Nigeria — plus Switzerland and the DRC are all holding fragments of the epidemiological picture. No single authority controls the full travel history, contact list, or exposure timeline. The Africa CDC will convene an extraordinary virtual meeting of national health officials on October 28 to coordinate, but the information gaps are already measured in weeks, not hours. Uganda's position is strategically precarious. It shares a long, porous border with the DRC, where Ebola outbreaks are recurring. It hosts a major regional transit hub at Entebbe. Its declaration of zero active cases may be technically accurate — or it may reflect surveillance systems that cannot detect what they are not designed to find. The distinction matters enormously for every country downstream of Ugandan air routes. In Nigeria, the confirmed case has triggered public anxiety in Abuja, compounded by economic hardship that limits healthcare access. Residents described carrying hand sanitizer and worrying less about illness than about basic survival. Nigeria's health authorities say contact tracing is continuing, but the country's healthcare infrastructure has been tested by Ebola before, and the memory is fresh.