Africa CDC Director-General Jean Kaseya disclosed the plan in an interview with Reuters on Monday, October 26, 2026, saying the investigation would focus on tracing the source of infection in the patient, a Ugandan-born woman married to a Swiss diplomat based in Abuja.

Nigeria confirmed the case on October 20 after laboratory tests detected the virus in the 42-year-old woman, who had received treatment at a private health facility in the Federal Capital Territory. Health authorities have since been working to establish how she contracted the disease and whether other people may have been exposed.

The case has raised questions because the woman’s reported travel history does not include a visit to the Democratic Republic of Congo (DRC), where the current Bundibugyo Ebola outbreak began. Her recent movements, including travel through Uganda, are therefore central to the ongoing investigation.

Scientists are also examining a possible connection between Nigeria’s case and Kenya’s first confirmed Ebola patient. The Kenyan patient had travelled from the DRC through Uganda before developing the disease and later died.

According to Reuters, genetic analysis found that the viruses detected in the Nigerian and Kenyan patients were closely related. Both individuals reportedly passed through Uganda’s Entebbe International Airport on October 3, although investigators have not established that they met or had direct contact.

Researchers are expected to examine additional genetic information and travel records to determine whether the cases are connected and, if so, how the virus may have been transmitted. An indirect transmission route has not been ruled out, but the precise source of the Nigerian infection remains unknown.

Ebola is primarily transmitted through direct contact with the blood or other bodily fluids of an infected person who is showing symptoms, as well as contaminated materials. Identifying the source of infection is important for tracing potential contacts and determining whether transmission may have occurred beyond the locations already identified.

Nigeria’s response has included contact tracing, monitoring and coordination among health authorities. The Nigeria Centre for Disease Control and Prevention (NCDC) reported in its October 24 situation report that 53 contacts linked to the confirmed patient had been identified and were being followed up.

The same report recorded a suspected case in Rivers State, but laboratory testing returned a negative result. The Abuja patient remained in isolation and was receiving medical care, with the report noting a significant improvement in her condition.

The investigation comes as the outbreak continues to affect several African countries. Kenya had recorded nine confirmed cases and two deaths by October 24, according to the Kenya News Agency. Health authorities said the cases remained linked to a known cluster of contacts, with no evidence of wider community transmission at that time.

The DRC remains the main centre of the outbreak, while health agencies are working with affected countries to strengthen surveillance, identify contacts and limit further spread.

The outcome of the Nigerian investigation could help clarify how the virus reached the country and whether the infection was linked to the wider regional outbreak. Until the source is established, health officials are continuing to monitor contacts and coordinate with international partners.

Reporting by TalkNaijaMedia