Nigeria confirmed its first Ebola case of the current outbreak on Tuesday after a woman who arrived from Uganda tested positive in the capital, Abuja. "We are doing everything possible to contain this case by tracing all the contacts the individual may have had," Pate said.

Uganda's ministry of health said the patient had only transited through Uganda while on a business trip to Congo's eastern region, insisting that "travel through Uganda does not establish that infection occurred here" and that Uganda has no confirmed active Ebola cases.

The case is a landmark for the wrong reasons: per POLITICO, Nigeria is the fifth country to detect the rapidly spreading Bundibugyo strain, and it is West Africa's first registered case since 2014, according to France 24.

The outbreak, declared in the Democratic Republic of Congo on May 15, has already reached Uganda and Kenya, and its arrival in Africa's most populous country shows how hard cross-border containment has become.

The Bundibugyo strain has no approved vaccine or specific treatment, and the WHO says early supportive care can improve survival.

Dr. Jean Kaseya, director general of the Africa CDC, warned on X that "we are facing an extremely serious threat," calling this "the most geographically extensive [Ebola outbreak] in history, affecting several countries spread across three regions of Africa."

The DRC epicenter has recorded more than 9,500 cases and more than 4,600 deaths per the figures cited by multiple outlets, with a crude case-fatality rate of 48.3% as of October 11 per Newsweek's account of WHO data.

Kaseya urged the international community to send funding, medical supplies and health workers, posting "My appeal to the international community is urgent: ACT NOW."

Kenya confirmed its ninth Ebola case on Tuesday: a 24-year-old man, a close family member of the country's first patient, who tested positive while already in quarantine.

"All nine cases belong to one cluster, and as of today there is no evidence of transmission outside this group," health Director-General Patrick Amoth said.

Kenya's first patient, a businessman who had lived in the DRC, arrived via Uganda and died in Nairobi on October 5; four relatives and four healthcare workers were subsequently infected.

Authorities have traced 134 of 135 identified contacts, put them in quarantine, and say eight surviving patients are responding well to treatment, with the first contacts due to complete their 21-day monitoring on October 25. Kenya has not imposed restrictions on travel, trade or public gatherings.

Nigeria established an Ebola taskforce in June after the Congo outbreak began in mid-May, and the Nigeria Centre for Disease Control said two weeks ago it was stepping up surveillance after Ebola was detected in Kenya, focusing on early detection, isolation and referral, laboratory diagnosis, infection prevention and control, contact tracing, and protection of healthcare workers.

Chief of staff Femi Gbajabiamila said Nigeria does not want "a repeat of what happened during the last outbreak when a carrier entered the country, and everyone was scrambling to respond." The US raised Kenya's travel advisory to Level 3, "Reconsider Travel," on October 19, per Newsweek.

The WHO, which gave Kenya around $70,000 in supplies, advises against any restriction of travel to or trade with the DRC, Uganda or Kenya.

Attention now turns to Nigeria's 44 traced contacts and whether any additional infections emerge, plus WHO's ongoing rapid risk assessment in Kenya.

On the medical front, TRT World reports the first clinical trial of a potential vaccine is expected to begin by the end of October: Ervebo, already approved against the Zaire strain, will undergo a full-scale human trial in the DRC to test cross-protection against Bundibugyo, while Oxford and Moderna are developing Bundibugyo-specific vaccines in early-stage trials.

The WHO is urging all countries in the region to sustain high readiness, heighten monitoring at points of entry and maintain response plans, warning that sustained readiness is essential to detect cases early and prevent onward transmission.