Ebola Spreads Beyond Congo to Four Nations, Affecting Three Regions

The fast-moving Ebola outbreak originating in the eastern Democratic Republic of Congo has now spread to four other countries, impacting three distinct regions across Africa and marking the widest geographical reach of any previous Ebola outbreak. Nigeria confirmed its first case on Tuesday, becoming the latest nation affected.

The outbreak, caused by the Bundibugyo virus for which there is no approved vaccine or drug, was first declared in eastern Congo in mid-May. It has resulted in at least 4,600 deaths among over 9,500 people infected in Congo. The World Health Organization has described it as the fastest-growing Ebola outbreak in history.

Nigeria's capital, Abuja, registered an Ebola infection in a woman who had traveled from Uganda approximately two weeks prior. She began exhibiting symptoms on Oct. 7 and was admitted to a private hospital in Abuja on Oct. 11, where she was subsequently diagnosed with Ebola. Authorities have initiated contact tracing for 44 individuals identified as having been in contact with the patient and are implementing measures to contain the case.

Uganda had declared an Ebola outbreak on the same day as neighboring Congo, following the detection of the infection in a man who was traveling from Congo. Early cases in Uganda involved Congolese patients who crossed the border seeking treatment for an undiagnosed illness before it was identified as Ebola. The WHO declared the Uganda outbreak over on Aug. 27, after 20 confirmed cases, including 15 patients from Congo. Of these, 18 recovered and two died. More than 800 contacts were monitored.

Kenya reported its first Ebola case on Oct. 6. The patient, who had traveled from Congo via Uganda, arrived in the capital, Nairobi, on Oct. 3. He tested positive for Ebola the following day and died on Oct. 5. The number of Ebola cases in Kenya has since risen to nine, including four relatives of the initial patient and four healthcare workers. Authorities have identified 135 contacts linked to these nine patients, with 134 currently in quarantine. Kenya's Health Ministry has stated there is no current evidence of transmission beyond the known contacts of the first patient.

Outside of Africa, France confirmed a single case in June involving a doctor who had returned from Congo. This marked the first and only recorded case in this outbreak beyond the African continent. The individual had been on a humanitarian mission in a virus transmission zone in Congo and received care at a specialized facility in France. The patient recovered and was discharged on July 4, according to the WHO.