Ebola
Risk of Spread Beyond Central Africa
An Ebola epidemic caused by the Bundibugyo virus has infected more than 10,000 people in the Democratic Republic of the Congo since May and killed nearly half of them. On Oct. 20 Nigeria became the fifth country to detect a case. This page tracks how far the virus is spreading beyond Central Africa, how real the risk is to West Africa, Europe and the United States, and which viral claims don’t hold up.
The epidemic in eastern Congo is the second-largest Ebola outbreak on record and, according to WHO, has moved faster than any before it. Cases have reached Uganda, France, Kenya and Nigeria, and a British health worker infected in Congo is being treated in London. WHO says the outbreaks in France and Uganda have been under control since August. Kenya is the only country outside Congo and Uganda with onward spread so far, all within a known cluster that includes three health workers. No case has been reported in the United States, and CDC rates the risk to Americans as low. The rating rises if a case appears outside known contacts in Nigeria or Kenya, or in a major transit hub.
What would change this rating ↓
ebola.america2.newsSteady in Congo, speeding up abroad
Congo’s confirmed cases have held near 500 a week since July. The spread abroad has not held steady. For five months, one case reached a country outside Congo and Uganda. In October two did in two weeks, both by commercial flight, and Kenya’s first case infected health workers who treated him. The outbreak has now reached central, western and eastern Africa, farther across the continent than any previous Ebola outbreak (CNN).
Bars (lower chart) show the average weekly increase between published totals, so their widths vary. Hover or tap a bar or dot for details; on phones, swipe the chart sideways. Sources: STAT, CDC, WHO.
When would Europe and the US face a real threat?
Mostly not from eastern Congo itself, where the outbreak is concentrated far from international airports. France’s one case was a returning aid doctor. The risk comes from spread in an African air hub with direct flights to Europe, such as Lagos, Abuja or Nairobi. Each step below would show up first in the tripwires.
- LowCases abroad are isolated and nobody else is infected.
- ElevatedImported cases in African hubs. Spread stays inside known contacts (Kenya). Exports to Europe are rare and isolated (France, June).
- HighCases appear outside the known contact lists in Nigeria or Kenya, or in a new hub. This is the step that would put Europe and the US at real risk of repeated imported cases.
- SevereSustained community spread in a hub. Expect repeated exported cases to Europe and the US.
History sets the scale. The 2014–16 West Africa epidemic infected more than 28,600 people. It reached seven more countries, including Spain, the UK and the US, and caused secondary infections in four of them (WHO). Imported cases in rich countries have so far been contained. The danger is many cases in an African hub at once.
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Latest reports
New reporting from major outlets and official sources, listed as it appears. Our monitoring adds headlines from major outlets automatically. "Checked" means our software fetched the full report and confirmed it supports its headline. "Reviewed" means an editor checked it against its source. "Auto" items have not been checked yet. Tap a label for our note. None of this is an endorsement. Our assessment is the rating above.
- Islamist militants force Ebola patients to flee in deadly Congo raid (Reuters)
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Our note: ISIS-linked militants raided Cantine-Aloya in North Kivu, killing at least 33 civilians and burning a health post; one confirmed and five suspected Ebola patients fled, the hospital’s head doctor told Reuters.An editor checked this report against its source. (2026-11-06) - As Ebola cases near 10,700, WHO recommends adding 2 Bundibugyo vaccines to clinical trial (CIDRAP)
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An editor checked this report against its source. (2026-11-05) - British healthcare worker with Ebola arrives back in the UK (The Independent)
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An editor checked this report against its source. (2026-11-05) - British Ebola patient evacuated from DRC arrives at London hospital (The Guardian)
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Our note: The first British national to contract Ebola in this outbreak is being treated at the Royal Free hospital in London; the UK Health Security Agency says the risk to the public remains low.An editor checked this report against its source. - British man being treated for Ebola in Congo is being evacuated to the UK (AP News)
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Our note: AP: a British man, believed to be a healthcare worker, is the third person who tested positive to return to Europe from this outbreak; the U.K. says the public risk is low.An editor checked this report against its source. (2026-11-05) - British man infected with Ebola in DR Congo arrives in UK for treatment (BBC)
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An editor checked this report against its source. (2026-11-05) - British Man Infected With Ebola in Congo to Be Evacuated to U.K., BBC Reports (The New York Times)
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Our note: The Times relays the BBC’s report that a British man infected with Ebola in Congo is being evacuated to the U.K.; AP and Reuters report the same evacuation.An editor checked this report against its source. (2026-11-05) - British man being treated for Ebola in Congo is being evacuated to the UK (Associated Press News)
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Our note: AP reports the patient, believed to be a healthcare worker, is the first British patient evacuated from this outbreak and is expected at London’s Royal Free Hospital; the Foreign Office says the risk to the public is low.An editor checked this report against its source. (2026-11-05) - WHO approves trials for two new Ebola vaccines (Al Jazeera)
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An editor checked this report against its source. (2026-11-04) - WHO backs trials for two new vaccines against Ebola outbreak (Euronews.com)
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An editor checked this report against its source. (2026-11-04)
What would change this assessment
The rating measures the risk of spread beyond Central Africa. It moves on confirmations from health ministries, WHO, Africa CDC, CDC or ECDC, or tier-one reporting that cites them. Suspected cases, rumors and social-media reports do not move it.
- not seenA case outside the known contacts in Nigeria or Kenya, or a health worker infected in Abuja, where the patient was treated in a private hospital for about nine days before diagnosis.
- not seenA new country confirming a case, above all a major transit hub such as Lagos, Nairobi, Addis Ababa or Kinshasa.
- not seenA case diagnosed in Europe or the United States outside a planned medical evacuation.
- not seenWHO raising its regional or global risk above “low,” or CDC adding Kenya or Nigeria to its entry order (next renewal due about Nov. 10).
- not seenWould move down: Kenya and Nigeria pass 42 days with no new case, and weekly cases in Congo fall for three weeks running.
What is actually known
- The scale. As of Oct. 28, Congo had reported 10,274 confirmed cases and 4,992 confirmed deaths, a fatality rate of 48.6% among confirmed cases, in eight provinces and 67 of 178 health zones. Ituri accounts for 71% of cases (Congo’s National Institute of Public Health, situation report No. 167). WHO’s Tedros Adhanom Ghebreyesus called it the second-largest Ebola outbreak on record and said it is “moving faster than any previous Ebola outbreak” (WHO, Aug. 18).
- The trend. In WHO’s last outbreak notice, weekly cases were roughly flat at about 480, and contact tracing reached about 80% of contacts (WHO, Oct. 8). Responders say many cases are found only after death and some areas are held by armed groups.
- Outside Congo. Uganda had 20 confirmed cases and two deaths; its outbreak was declared over on July 28 (Al Jazeera). France had one case, a doctor who had worked in Bunia (CP24). Kenya has nine: a man who flew in from Kampala on Oct. 3 and died on Oct. 5, then four relatives and four health and care workers who treated him (WHO). On Oct. 23 one of the relatives, a 65-year-old woman, died, Kenya’s second death; she had developed symptoms while already in quarantine (Reuters), and no new infections were reported (AP). The health ministry says there is no sign of community spread (Al Jazeera; CDC).
- Nigeria. A woman who arrived by air with recent travel to Uganda fell ill on Oct. 7, sought care in Abuja on Oct. 11 and tested positive on Oct. 20. Nigeria is monitoring the 44 contacts first reported and has since found more, mostly health workers (BBC). On Oct. 26 she and her husband, a Swiss diplomat, were flown to Switzerland for treatment; the WHO’s Africa director said Nigeria now has no Ebola cases and is monitoring 52 contacts (AP). Investigators are still working out where she was infected (WHO Africa).
- No vaccine or treatment is licensed for this strain. The existing Ebola vaccine, Ervebo, targets the Zaire strain; it is being tested in Congo in a ring-vaccination trial (CIDRAP). On Oct. 23 a pivotal trial of vaccines against Bundibugyo began in Congo, where most cases have occurred (Bloomberg). It enrolls contacts of cases and is designed to test several candidates side by side, including Ervebo, with results expected in 2027 (ClinicalTrials.gov).
- The United States. No case has been reported on US soil, and CDC rates the risk to Americans as low (CDC). Since May 18 the US has barred entry to non-citizens who were in Congo, Uganda or South Sudan in the previous 21 days, renewed every 30 days (CDC order). From Nov. 3, every US-bound air passenger must also attest that they have not been in Congo in the past 21 days (Independent). Kenya and Nigeria are not covered.
- Emergency status. WHO declared a public health emergency of international concern in May, and Africa CDC declared a continental emergency the next day (STAT). WHO rates the risk as very high in Congo, high in neighboring countries and low regionally and globally (WHO).
Claims in circulation
The most-shared claims, and what public sources can confirm. Tap the link icon on a row to share it.
ConfirmedThis is the fastest-moving Ebola outbreak on record.
WHO Director-General Tedros, Aug. 18. Congo passed 1,000 cases in about 40 days, against 235 days in the 2018 outbreak (CDC).
DisputedNigeria’s patient caught the virus in Uganda.
Accounts conflict. Nigeria’s health minister and Africa CDC’s chief told the BBC she spent two and a half weeks on holiday in Kampala and changed planes in Addis Ababa on the way home. Uganda’s health ministry says she went to eastern Congo on business and only passed through Uganda, and that it has no active cases. Investigators from Nigeria, Uganda, Ethiopia and Africa CDC are working to establish where she was infected (BBC; Vanguard; Health Policy Watch). On Oct. 22 Africa CDC said investigators are examining whether she and Kenya’s first patient, who both passed through Entebbe airport on Oct. 3, crossed paths or share a common source, and stressed that no link has been established. WHO says the source of her infection is still unknown, and Nigeria is sequencing the virus (BBC). On Oct. 23 Nigeria’s health minister said sequencing shows her virus differs from that of Kenya’s first patient by a single mutation, the first genetic link between the two cases. He said this does not show how she was infected, and that there is no evidence of a direct connection between the two patients (Reuters; Premium Times). On Oct. 23 Switzerland’s foreign ministry said she did not travel to Congo, contradicting Uganda (Reuters). She is the Ugandan-born wife of a Swiss diplomat based in Abuja. Officials have described him only as a diplomat, not the ambassador, and posts placing the original case in Switzerland or Kenya were wrong (Guardian); she was later evacuated to Geneva for treatment (AP).
MisleadingBitter kola and high-dose vitamin C can stop Ebola.
Posts by a Lagos deputy-governor candidate, citing 1999 lab work. The researcher called his own results inconclusive (FIJ).
No evidenceSwallowing mica flakes treats Ebola.
A widely shared Facebook post in Nigeria. Mica-type minerals sold for eating can contain arsenic and lead (FactCheck Africa).
No evidenceZinc, baking soda or elderberry are “secret cures” being hidden.
Wellness influencer accounts that sell supplements (Céline Gounder). No treatment is licensed for the Bundibugyo strain.
FalseThe outbreak is staged or a hoax.
Social posts in Congo and abroad, including claims of a political fabrication (Céline Gounder). More than 9,600 cases are laboratory-confirmed (CDC).
No evidenceThe outbreak is linked to US biolabs in Africa.
A Sputnik Africa podcast segment on May 19, according to a Konrad Adenauer Foundation report on health disinformation (KAS). Bundibugyo virus was first identified in Uganda in 2007.
What independent experts say
- Jean Kaseya, Africa CDC: calls it the most geographically extensive Ebola outbreak in history, with mortality near 50% (PBS). He has called a meeting of all African health ministers for Oct. 28; if they cannot find ways to stamp out the outbreak, he said, “the whole continent can be affected” (New York Times).
- Krutika Kuppalli, infectious-disease physician: travel bans “do little”; “viruses exploit weak public health systems — not commercial airline schedules” (STAT). Saudi Arabia suspended entry for travelers from Kenya on Oct. 30, adding it to similar bans on Congo, Uganda and South Sudan (The Standard).
- ECDC: rates the risk of importation into the EU as very low (ECDC).
What to watch next
- Nigeria’s 52 contacts: whether any fall ill before their 21-day monitoring ends, and where the patient was infected.
- Kenya’s cluster: whether new cases stay inside the known contact list.
- CDC’s entry order, due for renewal about Nov. 10: whether Kenya or Nigeria is added.
- WHO’s next outbreak notice: the weekly case trend in Congo and any change to its regional risk rating.
- The Oct. 28 meeting of African health ministers called by Africa CDC, and any joint measures it produces.
Timeline
- May 15Congo confirms Bundibugyo Ebola in Ituri; Uganda reports an imported case in Kampala.
- May 17WHO declares a public health emergency of international concern.
- May 18Africa CDC declares a continental emergency; CDC bars entry from Congo, Uganda and South Sudan.
- Jun 24France confirms a case in a doctor returning from Bunia.
- Jul 28Uganda declares its outbreak over.
- Aug 18Tedros: the outbreak is “moving faster than any previous Ebola outbreak.”
- Oct 6Kenya confirms its first case, a man who flew from Kampala to Nairobi.
- Oct 17Kenya reaches seven cases, including three health workers; nine by Oct. 20.
- Oct 20Nigeria confirms an imported case in Abuja; 44 contacts monitored. Congo reaches 9,637 confirmed cases.
- Oct 23Kenya reports its second death, a relative of the first patient.
- Oct 23Nigeria says sequencing links its case genetically to Kenya’s first case.
- Oct 26Nigeria’s patient is evacuated to Switzerland; Nigeria monitors 52 contacts and has no active case.
Key sources
- CDC: Ebola situation summary (case counts by country)
- WHO Disease Outbreak News, Oct. 8
- WHO Africa: Nigeria confirms imported case
- ECDC outbreak page
- CDC entry order