The Ebola outbreak that originated in the Democratic Republic of Congo earlier this year has expanded to a third region of Africa, representing the most widespread presence of the virus on the continent to date. Health authorities identified a new case in Abuja, Nigeria, last week, approximately 2,000 miles west of the outbreak’s epicenter in Central Africa. On the same day, Kenya reported its ninth confirmed Ebola case, signalling further geographic spread.
Since the initial case was detected in May, Congo has recorded more than 9,700 confirmed Ebola infections and over 4,600 fatalities, marking it as the fastest-growing Ebola epidemic in history. The virus has penetrated eight provinces within Congo, with about 70 percent of new infections occurring in the community, indicative of extensive undetected transmission.
Dr. Jean Kaseya, director general of the Africa Centres for Disease Control and Prevention, has called for an urgent meeting of all African health ministers scheduled for October 28 to coordinate efforts to control the outbreak. He warned that without decisive action, the entire continent is at risk.
The patient identified in Nigeria is a Ugandan national residing in Abuja with her husband, a Swiss diplomat. She reportedly returned from a trip that involved travel through Uganda before arriving in Nigeria. Ugandan officials noted she had traveled to Congo on business and passed through Uganda on her return to Nigeria, but this does not necessarily confirm infection occurred in Uganda. Contrarily, Dr. Kaseya stated the woman told health officials she had not traveled to Congo and had spent two weeks in Kampala, Uganda’s capital. Conflicting reports also exist regarding her travel timeline: the World Health Organization’s Africa office stated symptoms emerged on October 7, four days after her return to Abuja, whereas Nigerian health officials said she arrived on October 5, two days before symptoms began.
The woman sought medical attention for malaria-like symptoms on October 11 but was not initially suspected of having Ebola. It was not until October 20 that she tested positive for the Bundibugyo strain of Ebola. During the intervening period, she came into contact with at least 44 individuals, including many healthcare workers who are now under close monitoring.
Kenya’s new cases are all linked to a Congolese patient who traveled through Uganda before arriving in Nairobi. This individual was diagnosed on October 5 and died the same day. WHO Director-General Tedros Adhanom Ghebreyesus emphasized that while a single imported case can be contained through rapid contact tracing, the greatest concern remains sustained community transmission.
Vaccination efforts are underway with clinical trials for vaccines targeting the Bundibugyo strain, but widespread availability of these vaccines is not expected for several months. Additionally, vaccines currently exclude children under five, a group that accounts for nearly 25 percent of cases and approximately one-third of deaths in the outbreak.
Public health experts expressed concern over the apparent uncontrolled spread of the virus. Dr. Nahid Bhadelia, director of Boston University’s Center on Emerging Infectious Diseases, called the Nigerian case evidence of the outbreak’s escalating reach. She expressed particular apprehension about the risk of undetected transmission in countries bordering affected areas, such as South Sudan. Dr. Bhadelia also noted a lack of transparency from the Ugandan government regarding contact tracing and active investigations related to these cases.
Nigeria, Africa’s most populous nation and a major international travel hub, successfully contained an imported Ebola case during the 2014 outbreak within a few months, aided by its existing polio eradication infrastructure. Experts remain cautiously optimistic that Nigeria can once again control the spread, emphasizing the importance of early detection and swift public health interventions.