#BUNDIBUGYO VIRUS DISEASE #OUTBREAK, #DRC, #Uganda, #France - Situation #Report 11, as of 26 July 2026 (WHO, summary): 3262 cases & 1437 deaths in DRC

 

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Event description  

    ° The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continued to intensify during the reporting period, with sustained transmission, increasing mortality, and ongoing geographic expansion within the country. 

    ° The cumulative number of reported cases has exceeded the two previously documented Bundibugyo virus disease outbreaks, making this the largest outbreak caused by the Bundibugyo virus to date. 

    ° Although no new cases have been reported outside the Democratic Republic of the Congo, persistent transmission in areas connected by major national and cross-border mobility corridors continues to sustain a high risk of regional spread. 

    ° These epidemiological trends underscore the need for strengthened surveillance, cross-border collaboration, and preparedness to rapidly detect and contain any international spread. 

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Situation interpretation 

    ° The BVD outbreak in the Democratic Republic of the Congo continues to intensify despite the ongoing scale-up of response operations. 

    ° The sustained increase in transmission and mortality indicates that the outbreak remains uncontrolled. 

    ° Although transmission remains concentrated within a number of interconnected health zones, its continued expansion into adjacent areas suggests that current interventions have not yet been sufficient to reduce transmission intensity or halt the geographic spread of the outbreak. 

    ° The persistently high proportion of community deaths, suboptimal contact follow-up, and critically weak IPC capacity indicate that many transmission chains continue to be detected too late to prevent onward spread. 

    ° Although no international spread has been reported during the current reporting period, sustained transmission along major domestic and cross-border mobility corridors continues to pose a substantial risk of regional spread. 

    ° Strengthening early case detection, community engagement, IPC, and coordinated cross-border preparedness remains critical to interrupt transmission and reduce the risk of further national and international spread. 

Source: 

Link: https://www.afro.who.int/countries/democratic-republic-of-congo/publication/ebola-bundibugyo-virus-disease-outbreak-3

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#BUNDIBUGYO VIRUS DISEASE #OUTBREAK: #DRC, #Uganda, #France - Situation Report No. 10, as of 19 July '26 (WHO, edited): 2423 cases & 967 deaths in DRC

 

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Event description  

    ° Transmission of Bundibugyo virus disease (BVD) remained intense in the Democratic Republic of the Congo during the reporting week, with continued detection of new confirmed cases and deaths across multiple affected areas, alongside further expansion of the outbreak's geographic footprint. 

    ° The epidemiological situation outside the Democratic Republic of the Congo remained stable, with no new cases or evidence of secondary transmission reported in Uganda or France. 

    ° However, the persistence and geographic expansion of transmission within the Democratic Republic of the Congo continue to increase the risk of cross-border spread, highlighting the need for sustained regional surveillance, preparedness, and response efforts. 

Democratic Republic of the Congo 

    ° Since the last update of 12 July 2026 (Situation Report #9), the epidemiological situation in the Democratic Republic of the Congo has continued to deteriorate, with sustained transmission and ongoing geographic expansion. 

    ° An additional 460 confirmed cases and 248 confirmed deaths have been reported, representing increases of 23.4% and 34.5% in cumulative confirmed cases and confirmed deaths, respectively. 

    ° The crude case fatality ratio (CFR) among confirmed cases increased from 36.6% to 39.9%, likely reflecting delayed case detection, late presentation for care, and the persistently high proportion of deaths occurring outside designated treatment facilities, rather than increased disease severity. 

    ° During the reporting period, the outbreak expanded to five additional health zones across Haut-Uélé and Ituri provinces, increasing the total number of affected health zones from 42 to 47. 

    ° The newly affected health zones were Pawa, Boma Mangbetu, and Isiro in Haut-Uélé Province, and Mahagi and Adja in Ituri Province. 

Figure 1.  Weekly trend of confirmed cases of Bundibugyo virus disease in the Democratic Republic of the Congo by epidemiological week of report, epidemiological weeks 18 – 29, 2026 

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    ° Despite this continued geographic expansion, recent transmission remains concentrated in a subset of affected areas. 

    ° Of the 47 affected health zones, 40 have reported at least one confirmed case during the past 21 days. 

    ° During this period, 1,090 confirmed cases and 568 confirmed deaths were reported. 

    ° Ituri Province continues to bear the overwhelming burden of the outbreak, accounting for 946 cases (86.8%) and 476 deaths (83.8%), while the remaining four affected provinces together accounted for 144 cases (13.2%) and 92 deaths (16.2%). 

    ° In contrast, seven affected health zones have now gone more than 21 consecutive days without reporting a confirmed case, suggesting an absence of recent transmission, provided that surveillance remains sufficiently sensitive to detect ongoing transmission. 

    ° These health zones include Miti-Murhesa (60 days) in South Kivu Province; Aungba (30 days) and Gety (59 days) in Ituri Province; and Goma (55 days), Kalunguta (56 days), Mabalako (36 days), and Vuhovi (38 days) in North Kivu Province. 

    ° Recent transmission remained highly concentrated in a limited number of health zones. 

    ° The largest increases over the 21-day period were recorded in Bunia (281 cases), Nizi (173), Rwampara (155), Mongbwalu (105), Katwa (59), Lita (49), Nia-Nia (40), Mangala (37), and Bambu and Butembo (24 each). Together, these ten health zones accounted for approximately 86.9% of all additional confirmed cases reported during the period. 

    ° Bunia, Rwampara, Mongbwalu, and Nizi remained the principal transmission corridor. 

    ° The rapid increase in cases in Nizi, a health zone hosting several internally displaced persons (IDP) camps, together with the emergence of cases in Adja Health Zone, indicates continued westward and northward expansion of transmission within Ituri Province. 

    ° Mortality was similarly concentrated. The largest increases in confirmed deaths over the same 21-day period were reported in Bunia (129 deaths), Nizi (84), Mongbwalu (80), Rwampara (73), Katwa (45), Mangala (26), Lita (18), Butembo (16), Nyankunde (13), and Beni (11). 

    ° Collectively, these ten health zones accounted for approximately 87.0% of all additional confirmed deaths reported during the period. 

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    ° Overall, the distribution of confirmed deaths remained heavily skewed towards deaths occurring outside designated treatment centres, highlighting persistent delays in case detection, referral, and access to treatment. 

    ° Between 24 June and 19 July 2026, 673 confirmed deaths were reported, of which 400 (59.4%) occurred outside designated treatment centres and 273 (40.6%) occurred within designated treatment centres. 

    ° During the most recent reporting week (13 – 19 July 2026), mortality remained high, with community deaths (defined as deaths occurring outside designated treatment centres) accounting for 65.4% of all reported deaths, compared with 34.6% occurring within designated treatment centres. 

    ° This persistent predominance of community deaths suggests that delays in case detection, referral, and timely access to treatment continue to contribute substantially to mortality and underscore the need to strengthen community surveillance, rapid referral, and early access to care. 

    ° Since the beginning of the outbreak, the Democratic Republic of the Congo has reported 2,423 confirmed cases, including 967 confirmed deaths, corresponding to a crude case fatality ratio (CFR) of 39.9%. 

    ° Ituri Province remains the epicentre, accounting for 2,160 confirmed cases (89.1%) and 811 confirmed deaths (83.9%) reported nationally. 

    ° The most affected health zones continue to be Bunia (639 cases, 211 deaths), Rwampara (450 cases, 133 deaths), Mongbwalu (363 cases, 203 deaths), Nizi (214 cases, 93 deaths), Nyankunde (99 cases, 28 deaths), Lita (78 cases, 27 deaths), and Mangala (61 cases, 38 deaths) in Ituri Province, together with Katwa (104 cases, 72 deaths), Butembo (58 cases, 30 deaths), and Beni (37 cases, 25 deaths) in North Kivu Province. 

    ° Collectively, these ten health zones account for approximately 86.8% of all confirmed cases (2,103 of 2,423) and 88.9% of all confirmed deaths (860 of 967) reported nationally, demonstrating that, despite continued geographic expansion, the burden of the outbreak remains highly concentrated. 

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    ° As of 19 July 2026, a total of 10,519 contacts were under follow-up in the Democratic Republic of the Congo, of whom 8,531 (81.1%) were successfully seen within the previous 24 hours. 

    ° Ituri Province accounted for the majority of contacts under follow-up, with 7,537 contacts, including 6,123 (81.3%) successfully seen during the reporting period. 

    ° In North Kivu Province, 1,801 of 2,149 contacts (83.8%) were successfully followed up, while Haut-Uélé Province, one of the newly affected provinces, reported 607 contacts, of whom only 317 (52.3%) were seen within the previous 24 hours. 

    ° South Kivu Province had no contacts under active follow-up, reflecting the absence of recent transmission requiring contact monitoring, whereas contact follow-up data for Tshopo Province were not reported.  

    ° The overall contact follow-up rate remains below the operational target for effective contact tracing. Although follow-up performance in Ituri Province improved slightly compared with previous weeks, more than 1,400 contacts were not reached during the reporting period. The markedly low follow-up rate in Haut-Uélé Province is of particular concern given the recent geographic expansion of the outbreak. These gaps increase the risk of undetected infections, missed chains of transmission, and sustained community transmission in both established and newly affected areas. 

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Uganda  

    ° No new confirmed cases have been reported in Uganda since the previous update. 

    ° The most recent confirmed case, reported on 21 June 2026, was identified in a truck driver travelling along the Democratic Republic of the Congo Uganda international route. 

    ° Since then, no additional imported or locally acquired cases have been detected, and there is no evidence of ongoing transmission.  

    ° As of 19 July 2026, the outbreak remains limited to 21 cases (20 confirmed and one probable), including three deaths (two confirmed and one probable). 

    ° All 18 recovered patients have now been discharged from care, with the last confirmed patient discharged on 16 July 2026. 

    ° Since the beginning of the outbreak, 836 contacts have been identified, all of whom successfully completed the required 21-day follow-up period, during which six secondary cases were detected. 

    ° No contacts are currently under follow-up, reflecting the absence of active transmission chains.  

    ° Following the discharge of the last confirmed patient on 16 July 2026, Uganda entered the 42-day countdown required to declare the end of the outbreak. As of 19 July 2026, the country was on Day 5 of the countdown. 

    ° Nevertheless, Uganda remains at high risk of reintroduction due to the ongoing outbreak in the neighbouring Democratic Republic of the Congo. 

    ° Continued population movement across the shared border underscores the importance of maintaining cross-border coordination, surveillance, rapid case detection, and response readiness until transmission has been interrupted in both countries. 

Figure 5.  Weekly trends of confirmed cases of Bundibugyo virus disease in Uganda by epidemiological week of report, epidemiological weeks 18 – 29, 2026 

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France 

    ° No additional Bundibugyo virus disease (BVD) cases have been reported in France since the previous update. 

    ° No secondary transmission has been identified among the five flight contacts who were placed under precautionary quarantine following exposure to the imported case reported on 24 June 2026. 

    ° All five flight contacts successfully completed the 21-day monitoring period. 

Risk Assessment 

    ° The overall public health risk in the Democratic Republic of the Congo remains very high, driven by sustained transmission, increasing mortality, and continued geographic expansion from three to five affected provinces. 

    ° Although transmission remains concentrated in Ituri Province, the emergence of newly affected health zones in HautUélé and Tshopo provinces highlights the continued potential for spread into previously unaffected areas. 

    ° The rising CFR and the high proportion of community deaths continue to indicate delays in case detection, isolation, referral, and access to clinical care. 

    ° Contact tracing performance remains below the operational target, particularly in Ituri Province, where follow-up coverage is substantially lower than in North Kivu despite Ituri accounting for the majority of ongoing transmission. 

    ° Uganda remains at high risk of reintroduction because of the ongoing outbreak in neighbouring Democratic Republic of the Congo, despite reporting no new cases during the reporting period. 

    ° The absence of secondary transmission following the imported case in France demonstrates the effectiveness of rapid public health measures, but also underscores the continued risk of international spread through travel.  

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Situation interpretation 

    ° The BVD outbreak in the Democratic Republic of the Congo continues to intensify despite the ongoing scale-up of response operations. 

    ° Although transmission remains highly concentrated in a limited number of health zones in Ituri Province, continued geographic expansion into Haut-Uélé and Tshopo provinces indicates that new transmission foci continue to emerge. 

    ° Persistently high mortality, driven by the large proportion of deaths occurring outside designated treatment centres, together with a rising CFR, indicates that many patients are still being detected and referred too late to benefit from optimal clinical care. 

    ° While surveillance, laboratory, case management, and operational capacities continue to expand, important gaps remain in contact tracing, infection prevention and control, and community engagement, particularly in newly affected areas. 

    ° Strengthening early case detection, improving contact follow-up, expanding timely access to clinical care, reinforcing infection prevention and control measures in healthcare settings, and sustaining community trust and cross-border preparedness will be critical to interrupt transmission and reduce mortality 

Source: 

Link: https://www.afro.who.int/countries/uganda/publication/ebola-bundibugyo-virus-disease-outbreak-democratic-republic-congo-4

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#Bundibugyo Virus Disease #Outbreak, #DRC & #Uganda (Africa CDC, data as of 18July 2026): 2344 cases and 930 deaths in DRC

 

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    ° TOTAL CONFIRMED CASES: 2,364

        § DRC 2,344

        § Uganda 20

    ° TOTAL DEATHS: 932

    ° CFR: 39.4%

        § DRC 930

        § UG 2

    ° TOTAL RECOVERIES: 484

        § DRC 466

        § Uganda 18

    ° CONTACTS FOLLOWED: 85.8%

    ° HCW INFECTIONS: 123

        § DRC 119 

        § Uganda 4

    ° HCW DEATHS: 36

        § DRC 36 

        § Uganda 0

EPIDEMIOLOGICAL STATUS

    ° The outbreak remains concentrated in the DRC, accounting for 99% (2,344/2,364) of confirmed cases and deaths (930/932) —within the country, Ituriis the epicentre, while Nord-Kivu (230) is the main second hotspot

    ° The overall case-fatality ratio (39.4%) remains high, reflecting late presentation and constrained access to care.

    ° Uganda remains in the 42-day countdown to outbreak closure following the discharge of last case on 16 July

EPIDEMIOLOGICAL RISK

    ° A high rate of community deaths is the clearest warning sign in an Ebolavirus response, indicating that transmission chains are detected late or not at all, and that safe-burial and case-finding systems are not yet adequate. Each community death involves multiple high-risk exposures during the deathbed and funeral.

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Source: 

Link: https://reliefweb.int/report/democratic-republic-congo/bundibugyo-virus-disease-outbreak-situation-report-issue-no-62-july-18-2026

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#UK, Precautionary #medical #evacuation following a potential healthcare related #exposure to #Ebola (UKHSA, July 21 '26)

 

    Medical evacuation has been arranged as a highly precautionary measure following a potential healthcare related exposure to Ebola. 

    UKHSA works with international partners to ensure that any British residents who may be at risk can be safely returned home and given the treatment and care required. 

    The individual is a UK resident who has been working with a humanitarian organisation in DRC supporting the Ebola outbreak response.

    The individual is not currently displaying any symptoms and remains well, but as a precautionary measure they have been evacuated on a flight chartered solely for the evacuation. 

    They are now being assessed and monitored in isolation by infectious disease specialists at a London hospital. 

    The incubation period of Ebola ranges from 2 to 21 days and the individual will be closely monitored and required to isolate throughout this period.

    There are currently no confirmed cases of Ebola in the UK and the risk to the general public remains low. UKHSA will provide further updates if there is any change to the current situation.

    Richard Pebody, Director, Epidemic and Emerging Infections at UKHSA, said:

        ''The risk to the general public remains low. This individual has been transferred out of an abundance of caution, and we’re pleased they remain well.''

Source: 

Link: https://www.gov.uk/government/news/precautionary-medical-evacuation-following-a-potential-healthcare-related-exposure-to-ebola

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#Canada, New Temporary #Border #Measures in Response to the #Ebola Disease #Outbreak (PHAC, July 19 '26)

 

Statement | July 19, 2026 | Ottawa, Ontario | Public Health Agency of Canada

    In response to the ongoing Ebola disease outbreak in the Democratic Republic of the Congo, the Government of Canada is taking decisive action and implementing new temporary border measures to reduce the risk of the disease entering and spreading within Canada. 

    As of Monday, July 20, 2026, 11:59 p.m. EDT, any foreign national who was in the Democratic Republic of the Congo within the past 21 days will be prohibited from entering Canada. 

    To support this measure, an Interim Order under the Aeronautics Act is also in place, requiring commercial and private air carriers to not permit foreign nationals to board a flight to Canada.

    The Public Health Agency of Canada (PHAC) previously introduced temporary border measures under the Quarantine Act to reduce the risk of introduction and spread of Ebola disease in Canada. 

    These measures came into effect on May 30 at 11:59 p.m. EDT and are in effect until August 29, 2026. 

    These temporary border measures are out of an abundance of caution, as the health risk to Canadians from Ebola disease is considered low, and no travel-related cases have been reported in Canada to date.

    Limiting entry of foreign nationals who have been in the the DRC in the previous 21 days may reduce public health risks for Canadians and is intended to increase the effectiveness and sustainability of border measures that can safely process travelers arriving in Canada, including our returning humanitarian workers.

    There is no change for Canadian citizens, permanent residents, and persons registered under the Indian Act entering Canada who have been in the Democratic Republic of Congo, Uganda or South Sudan within the previous 21 days. 

    They will continue to be able to travel to Canada, will receive a health assessment upon arrival and be required to quarantine on arrival for 21 days. 

    This and all other measures from the previous Order in Council remain in place until August 29, 2026.

    Anyone planning to travel internationally should review the Travel Advice and Advisories page for their destination(s) before travelling. PHAC updated a level 2 travel health notice for Ebola disease in the Democratic Republic of Congo on May 19. Any travellers to Uganda should refer to the Outbreak Monitoring alert on the Travel Advice and Advisory page for that destination.

Source: 

Link: https://www.canada.ca/en/public-health/news/2026/07/new-temporary-border-measures-in-response-to-the-ebola-disease-outbreak.html

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#Ebola disease caused by #Bundibugyo virus, #DRC & #Uganda (WHO D.O.N., July 17 '26): 2124 cases & 828 deaths in DRC

 

Situation at a glance

    ° The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo remains active, with sustained transmission driving increases in reported cases and deaths. 

    ° As of 15 July 2026, a cumulative total of 2124 confirmed cases, including 828 deaths, have been reported from the Democratic Republic of the Congo. 

    ° On 13 July 2026, German authorities informed WHO of a laboratory-confirmed case of Ebola disease caused by Bundibugyo virus in a humanitarian worker from the United States of America who was medically evacuated from the Democratic Republic of the Congo. 

    ° This is the second United States citizen to be treated in Germany, reflecting the ongoing international response efforts. 

    ° In Uganda no new cases have been reported since 21 June 2026. The most recent case was discharged from the treatment centre on 16 July after two negative tests results. 

    ° The country has therefore begun the 42-day period of enhanced surveillance required before the end of the outbreak can be declared. 

    ° National authorities in Uganda and the Democratic Republic of the Congo, in collaboration with WHO and partners, continue to implement extensive response measures. 

    ° A regional preparedness and prioritization framework continues to guide readiness activities across the African Region.

Description of the situation

    ° Since the previous  Disease Outbreak News was published on 3 July 2026, the number of confirmed cases and deaths has increased substantially in the Democratic Republic of the Congo. 

    ° In total, 2145 confirmed cases have been reported:  2124 in the Democratic Republic of the Congo (including two cases with diagnosis in the Democratic Republic of the Congo and subsequent treatment in Germany), 20 in Uganda and one in France. 

    ° A total of 830 deaths has been reported, including two in Uganda.  

    ° To date, at least 410 patients have recovered, including 390 in the Democratic Republic of the Congo, 18 in Uganda, one in France, and one in Germany.  

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Democratic Republic of the Congo

    ° Since 3 July 2026, an additional 664 confirmed cases, including 376 confirmed deaths, have been reported in the Democratic Republic of the Congo. 

    ° The increase is in part due to the scale-up of surveillance activities, testing, and diagnostic capacities. 

    ° As of 15 July 2026, a total of 2124 confirmed cases, including 828 deaths (crude case fatality ratio [CFR] 39%) have been reported in the Democratic Republic of Congo. 

    ° So far, 390 patients have recovered. 

    ° Cases have been reported from 46 health zones (HZ) across five provinces:  Ituri (27/36 HZ), North Kivu (11/34 HZ), South Kivu (1/34 HZ), Haut-Uele (4/13 HZ) and Tshopo (3/23 HZ).

    ° Of the 46 affected health zones, the outbreak remains active in 38 health zones, which have reported cases within the past 21 days. The remaining health zones have not reported any new cases during this period. In the past 21 days, 969 confirmed cases, including 524 confirmed deaths, have been reported.  

    ° Ituri  remains the most affected province, accounting for 89.6% (1904/2124) of all confirmed cases and 83.6% (692/828) of all reported deaths nationwide. Within the province, the highest number of confirmed cases have been reported from Bunia (570 cases), Rwampara (418 cases), Mongbwalu (347 cases), Nizi (148 cases), and Nyankunde (99 cases) health zones.  

    ° As of 15 July, 12 693 contacts have been identified and are under follow-up across Ituri (10 183), North Kivu (2360) and Tshopo (150). Of these, 10 195 contacts have been followed up, corresponding to follow-up rates of 78.1% in Ituri, 50.0% in Tshopo and 91.7% in North Kivu. Previously listed contacts in South Kivu have completed their 21-day followup. In addition, 107 contacts of the case reported in France have been listed and are under follow-up in Kinshasa.  

    ° Infections among health workers continued to increase, with 119 confirmed cases, 61 recoveries and 36 deaths reported among health workers, corresponding to a CFR of 30.3%. This highlights persistent occupational exposure risks, inadequate infection prevention and control (IPC) implementation in health facilities, and exposure risk in the community. 

    ° The outbreak continues in a complex humanitarian and conflict-affected environment, characterized by highly mobile and often displaced populations, many of whom have limited access to basic services, including food, clean water, shelter, health care and protection.  These conditions increase the risk of transmission, particularly in overcrowded sites for internally displaced people. 

    ° Security incidents affecting health facilities, have created additional operational challenges in affected provinces, including restricted access for response teams, disruption of surveillance and response activities and an increased risk of undetected transmission. These conditions underscore the need for response efforts to be led by local leaders and anchored in communities.  

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Figure 2: Number of confirmed cases (n = 2124), in the Democratic Republic of the Congo, by date of reporting and as of 15 July 2026 

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Figure 3: Number of deaths among confirmed cases (n = 828), in the Democratic Republic of the Congo, by date of reporting and as of 15 July 2026.  

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NB: Newly reported confirmed cases/deaths may be part of the backlog of samples and therefore not necessarily newly acquired infections.  

Uganda

    ° The last confirmed case was reported to be identified on 21 June 2026.  As of 14 July 2026, a cumulative total of 20 confirmed cases have been reported, including two deaths in imported cases (reported on 15 May and 5 June) and one probable case resulting in death. 

    ° Of the confirmed cases, 15 were imported cases and five were secondary cases among contacts and health workers linked to imported cases from the Democratic Republic of the Congo.  All cases were reported in Kampala District. To date, no community transmission has been in Uganda. Exposure risks have been associated with health-care settings and cross-border movements.  

    ° Following case reclassification, the number of affected healthcare workers was revised from five to four. In total, 18 recoveries have been reported. 

    ° Of the 831 contacts listed as of 28 June, 821 contacts have completed their 21-day follow-up period as of 14 July.  

    ° The most recent case was discharged from the treatment centre on 16 July after two negative tests results. This marks the start of the 42-day countdown period (twice the maximum incubation period) to ensure surveillance activities continue to be implemented and detect any cases that were missed before the declaration of the end of the outbreak. Given the ongoing outbreak in the Democratic Republic of the Congo, the risk of importation still exists.   

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Figure 4: Number of confirmed cases (n = 20), in Uganda by date of reporting and as of 17 July 2026 

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France

    ° No additional BVD cases have been reported in France since the previous update. 

    ° The imported confirmed BVD case reported on 24 June recovered and was discharged from the healthcare facility on 4 July after two negative PCR test results. No secondary transmission has been identified among the five low-risk flight contacts  placed under precautionary quarantine. These contacts  completed their follow-up period on 14 July. 

    ° French authorities have been monitoring  these individuals in coordination with relevant regional public health authorities as well as with the National IHR Focal Points of Belgium and the Netherlands who conducted an individual risk assessment. None of the contacts developed symptoms, and no addtional  at-risk individuals have been identified. 

Germany

    ° A  physician from the United States  working in the Democratic Republic of the Congo, was medically evacuated and treated in Germany in May 2026. The patient recovered and was discharged. No secondary cases were reported. 

    ° A second United States citizen, a humanitarian worker, tested positive for Bundibugyo virus in the Democratic Republic of Congo in July 2026 and was medically evacuated to a university hospital in Frankfurt/Main, Germany. The patient  is reported to be in stable condition.

Epidemiology

    ° Bundibugyo virus disease (BVD) is a severe Ebola disease caused by the Bundibugyo virus, one of the Orthoebolavirus species. It is a zoonotic disease, with fruit bats suspected to be the natural reservoir. 

    ° Human infection is thought to occur through close contact with the blood or secretions of infected wildlife, such as bats or non-human primates, and it subsequently spreads from person-to-person through direct contact with the blood, secretions, organs, or other bodily fluids of infected individuals or contaminated surfaces and materials. Transmission is particularly amplified in health-care settings when IPC measures are inadequate and during unsafe burial practices involving direct contact with deceased persons. 

    ° The incubation period for BVD ranges from 2 to 21 days, and infected individuals are not infectious until symptom onset. Early symptoms such as fever, fatigue, muscle pain, headache, and sore throat, are non-specific, which complicates clinical diagnosis and can delay detection. These symptoms then progress to gastrointestinal symptoms, organ dysfunction, and, in some cases, haemorrhagic manifestations. 

    ° CFRs in the past two BVD outbreaks, reported in Uganda and in the Democratic Republic of the Congo in 2007 and 2012 were 30% and 50%, respectively. 

    ° Differentiating BVD from other endemic febrile illnesses such as malaria is challenging without laboratory confirmation using PCR or antigen- or antibody-based assays. Outbreak control relies on rapid case identification, isolation and care, contact tracing, safe burials and strong community engagement, as no approved vaccines or specific treatments currently exist for BVD. 

Public health response

    ° Health authorities in the Democratic Republic of the Congo and Uganda, in collaboration with WHO and partners, continue to implement extensive public health measures, including implementing the continental response plan, engaging donors and mobilizing additional resources to address critical funding gaps and sustain response operations across affected and at-risk areas. 

    ° For further information about public health response actions by the respective Ministry of Health, WHO and partners, please refer to the latest situation reports published by the WHO Regional Office for Africa: Ebola Bundibugyo Virus Disease Outbreak Democratic Republic of the Congo | Uganda Weekly External Situation Report | WHO | Regional Office for Africa  

WHO risk assessment

    ° On 6 June 2026, WHO reassessed the risk of the outbreak of BVD to incorporate newly available information and align with the WHO Temporary Recommendations. The risk for countries sharing land borders with countries with documented Bundibugyo virus detection, the Democratic Republic of the Congo and Uganda at the time of assessment, has been separated from the risk for other countries in the African Region. 

    ° The risk in the Democratic Republic of the Congo remains assessed as very high due to ongoing transmission and the continued expansion of the outbreak into new health zones, increasing the potential for further national and regional spread. 

    ° The risk in Uganda is still assessed as high due to confirmed cross-border spread through imported cases and ongoing epidemiological links along the eastern Democratic Republic of the Congo–western Uganda corridor, which has historically been affected by Ebola outbreaks, including Bundibugyo virus and Sudan virus disease.  

    ° The risk for countries sharing land borders with countries reporting BDBV detection is assessed as high due to sustained population mobility linked to cross-border trade and mining activities, variation in capacities and experience of BVD response, and variable levels of readiness.  

    ° The risk for the rest of the African region and at the global level is assessed as low. 

    ° For further information, please see the WHO Rapid Risk Assessment – Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo, Uganda and countries with land borders adjoining countries with documented BDBV detection v3. 

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Source: 

Link: https://www.who.int/emergencies/disease-outbreak-news/item/2026-DON613

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Identification of #Contacts With High Rates of Missed and #Asymptomatic Infection Following an #Outbreak of #Ebola Virus Disease: A Seroepidemiological Study in Likati Health Zone, #DRC

 

Abstract

Background

Ebola virus disease (EVD) is often regarded as severe and highly fatal, but growing evidence suggests that subclinical or minimally symptomatic infections occur and frequently go undetected. During the 2017 outbreak in Likati Health Zone, only 8 cases were confirmed despite many reported exposures. We evaluated the extent of asymptomatic or unrecognized Ebola virus infection and associated factors among contacts of reported cases.

Methods

In November 2017, we conducted a cross-sectional community-based serosurvey among contacts originally identified through Ministry of Health records and newly identified through additional post-outbreak investigations. Participants provided blood samples and completed questionnaires on demographics, exposures, and symptoms within 4 weeks of symptom onset of the EVD case with whom contact was reported. Sera were tested for anti-EBOV nucleoprotein IgG by ELISA. Seropositive individuals were classified as asymptomatic (no symptoms) or unrecognized (≥1 symptom). Secondary attack rate (SAR) was estimated, and logistic regression assessed associations with sociodemographic factors, exposure level, and symptoms.

Results

Among 180 participants (79 originally identified; 101 newly identified), 33 (18.3%) were seropositive. Of these, 19 (58%) reported symptoms, and 14 (42%) were asymptomatic. Any EVD-related symptom was associated with higher odds of seropositivity (OR 2.48, P = .021), though no specific symptom was significant. Asymptomatic individuals had higher antibody titers than symptomatic seropositive contacts (P = .009). The overall SAR was 19.1% (95% CI: 15.9–23.0). High exposure level strongly predicted seropositivity (OR 11.2, 95% CI: 3.8–33.3).

Conclusions

Asymptomatic infections occurred, including among contacts missed during the response, highlighting the need for exposure-based serologic assessments in EVD investigations and raising questions about immune responses and the true disease burden in outbreak-affected settings.

Source: 

Link: https://academic.oup.com/ofid/article/13/7/ofag397/8725922

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#Screening and #monitoring of #travellers returning from countries affected by #Bundibugyo virus: an overview of #European approaches, July 2026

 

Abstract

The 2026 Ebola outbreak caused by Bundibugyo virus in the Democratic Republic of the Congo and Uganda has prompted European countries and the United States to revise measures for travellers, healthcare workers and humanitarian personnel returning from affected areas. We compare current procedures and protocols with those implemented during the 2013–2016 Ebola outbreak. Despite some national differences, policies have largely converged towards risk-based management, early case detection, rapid isolation, exposure-based monitoring and healthcare preparedness, rather than routine border screening.

Source: 

Link: https://www.eurosurveillance.org/content/10.2807/1560-7917.ES.2026.31.28.2600578?emailalert=true#abstract_content

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#Bundibugyo #ebolavirus from the 2026 Ebola #outbreak in #Uganda and #DRC: a new #variant

 

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In conclusion, we show that the BDBV variant identified in Uganda from a travel-related case linked to the ongoing outbreak in Ituri represents a new clade of BDBV. These findings underscore the diversity of the BDBV ecosystem and the urgent need for antiviral and vaccine countermeasures to reduce fatalities and for public health measures to limit the spread of the virus. Global efforts are immediately needed in this region. Continued genomic surveillance is required for in-depth monitoring to track emerging BDBV variants and adjust and employ BDBV countermeasures in a timely manner.

Source: 

Link: https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(26)01079-2/fulltext

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#Bundibugyo Virus Disease #Outbreak in #DRC, #Uganda & #France - #Situation Report 09, Data as of 12 July 2026 (WHO AFRO, edited): 1963 cases & 719 deaths in DRC

 

Key Figures at a Glance (Democratic Republic of the Congo) 

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Summary

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Event description

    ° The Bundibugyo virus disease outbreak in the Democratic Republic of the Congo intensified during the past week, with epidemiological indicators suggesting sustained and increasing transmission. 

    ° The outbreak was characterized by a rising incidence of reported cases, increasing mortality and continued geographic expansion into additional provinces and health zones, indicating ongoing propagation across affected areas. 

    ° Outside the Democratic Republic of the Congo, the epidemiological situation remained unchanged, with no new cases reported in Uganda or France and no evidence of secondary transmission. 

    ° Nevertheless, continued geographic expansion and increasing transmission intensity within the Democratic Republic of the Congo elevate the likelihood of cross-border spread and reinforce the need for sustained regional surveillance, preparedness and response measures. 

Democratic Republic of the Congo

    ° Since the last update of 5 July 2026 (Situation Report #8), the epidemiological situation in the Democratic Republic of the Congo has further deteriorated with sustained transmission and continued geographic expansion. 

    ° An additional 339 confirmed cases and 198 confirmed deaths have been reported, representing increases of 20.9% and 38.0% in cumulative confirmed cases and deaths, respectively. 

    ° The crude case fatality ratio (CFR) among confirmed cases increased from 32.1% to 36.6%, likely reflecting delayed case detection, late presentation for care, and the persistently high proportion of deaths occurring in the community, rather than increased disease severity. 

    ° Geographic spread also continued during the reporting period, with the outbreak expanding from three to five affected provinces following the confirmation of cases in Haut-Uélé and Tshopo provinces. 

    ° The number of affected health zones increased from 36 to 42, with Wamba (Haut-Uélé Province), Ariwara and Boga (Ituri Province), and Lubunga, Makiso-Kisangani, and Mangobo (Tshopo Province) reporting their first confirmed cases.  

    ° Daily reported confirmed cases have continued to increase over the course of the outbreak, although substantial day-to-day variability is observed. 

    ° A log-linear model fitted to the daily incidence data estimates an average daily growth rate of 2.3% (95% CI 2.0% - 2.5%), indicating that the outbreak continues to expand and transmission remains above the threshold required for sustained epidemic expansion.  

Figure 1. Epidemic curve showing daily confirmed case incidence and estimated epidemic growth, Democratic Republic of the Congo, 11 May–12 July 2026 

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    ° Despite this continued geographic expansion, recent transmission remains concentrated in a subset of affected areas. 

    

    ° Of the 42 affected health zones, 33 have reported at least one confirmed case within the past 21 days. 

    ° During this period, 869 confirmed cases and 441 confirmed deaths were reported. 

    ° Ituri Province continues to bear the overwhelming burden of the outbreak, accounting for 775 cases (89.2%) and 382 deaths (86.6%), while the remaining four affected provinces together reported 94 cases (10.8%) and 59 deaths (13.4%). 

    ° In contrast, nine previously affected health zones have now surpassed 21 consecutive days without reporting a confirmed case, suggesting an absence of recent transmission while enhanced surveillance remains in place. 

    ° These include Miti-Murhesa (53 days) in South Kivu Province; Aru (38 days), Aungba (23 days), and Gety (52 days) in Ituri Province; and Goma (48 days), Kalunguta (49 days), Mabalako (29 days), Oicha (26 days), and Vuhovi (31 days) in North Kivu Province. 

    ° The highest levels of recent transmission were recorded in Bunia (207 cases), Rwampara (159), Mongbwalu (92), and Nizi (80) in Ituri Province, reaffirming the Bunia–Rwampara–Mongbwalu transmission corridor while highlighting Nizi as an increasingly important hotspot. 

    ° Transmission also intensified in Mangala (36 cases) and Nia-Nia (33), the latter serving as the epidemiological source of the newly affected provinces of Haut-Uélé and Tshopo. 

    ° In North Kivu Province, Katwa (39 cases) remained the principal hotspot, followed by Butembo (16) and Beni (10). 

    ° Collectively, these health zones accounted for 77.3% of all confirmed cases reported during the past 21 days. 

    ° A similar pattern was observed for mortality. Bunia reported the highest number of confirmed deaths (108), followed by Mongbwalu (71), Rwampara (52), Nizi (30), Katwa (28), Mangala (23), Nyankunde (14), Lita (13), Nia-Nia (11), Beni (8), and Butembo (7). 

    

    ° Together, these health zones accounted for 365 (82.8%) of the 441 confirmed deaths reported during the same period. 

    ° The confirmation of cases in Haut-Uélé and Tshopo provinces marks a significant geographic expansion of the outbreak beyond its original focus in Ituri and North Kivu. 

    ° Although relatively few cases have been reported in these newly affected provinces, the detection of cases in three health zones in Tshopo, including Makiso-Kisangani in the provincial capital, raises concern because of its large urban population and its role as a major transport hub connecting northeastern DRC with other parts of the country. 

    ° Epidemiological investigations indicate that the cases in Tshopo and Haut-Uélé are linked to transmission originating in Nia-Nia Health Zone in Ituri, suggesting geographic extension of an existing transmission chain rather than the emergence of independent outbreak foci. 

    ° The recent confirmation of the first case in Ariwara Health Zone represents a further northward expansion of the outbreak towards the borders with South Sudan and Uganda, increasing the potential for cross-border spread through frequent population movement and trade.  

    ° The expanding geographic footprint of the outbreak has also continued to pose risks beyond affected communities. 

    ° During the reporting period, a United States humanitarian worker infected with Bundibugyo virus disease while working in the Democratic Republic of the Congo was medically evacuated to a specialized high-level isolation unit at Frankfurt University Hospital, Germany. 

    ° The patient, a logistics staff member with a humanitarian organization supporting the Ebola response in Bunia, Ituri Province, was reported to be in stable condition following early diagnosis and treatment. 

    ° The case highlights the continued occupational risk faced by frontline humanitarian personnel responding to the outbreak. 

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    ° Since the beginning of the outbreak, the Democratic Republic of the Congo has reported 1963 confirmed cases, including 719 confirmed deaths (CFR 36.6%). 

    ° Ituri Province remains the epicentre of the outbreak, accounting for 90.3% (1,772) of all confirmed cases and 84.6% (608) of all reported deaths nationwide. 

    ° The most affected health zones continue to be Bunia (503 cases, 156 deaths), Rwampara (384 cases, 89 deaths), Mongbwalu (329 cases, 171 deaths), Nizi (110 cases, 36 deaths), Nyankunde (97 cases, 23 deaths), Mangala (50 cases, 29 deaths), and Lita (45 cases, 19 deaths), all located in Ituri Province, together with Katwa (71 cases, 47 deaths), Butembo (44 cases, 20 deaths), and Beni (30 cases, 20 deaths) in North Kivu Province. Collectively, these health zones account for approximately 84.7% of all confirmed cases and 84.8% of all confirmed deaths reported nationally. 

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    ° Close contacts, including 7,830 (79.4%) successfully seen during the reporting period. In North Kivu, 2,152 of 2,377 contacts (90.5%) were successfully followed up, while all contacts in South Kivu had completed the required 21-day monitoring period. 

    

    ° Contact follow-up data for the newly affected provinces of Haut-Uélé and Tshopo were not reported. 

    ° The overall follow-up rate remains below the operational target for effective contact tracing. 

    ° The marked disparity between provinces is of particular concern. While North Kivu achieved a follow-up rate exceeding 90%, Ituri, the epicentre of the outbreak and home to more than 80% of contacts under follow-up, reached only 79.4%. This leaves a substantial number of contacts in the highest transmission setting unreached each day, increasing the risk of undetected infections and sustained community transmission. 

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Uganda

    ° No new confirmed case has been reported in Uganda since the previous update. The most recent confirmed case, reported on 21 June 2026, was identified in a truck driver travelling along the Democratic Republic of the CongoUganda international route. 

    ° Since then, no additional imported or locally acquired cases have been detected and there is no evidence of ongoing transmission.  

    ° As of 12 July 2026, the outbreak remained limited to 21 cases (20 confirmed and one probable), including three deaths (two confirmed and one probable). 

    ° Seventeen patients have recovered and been discharged from care, leaving one confirmed patient currently admitted to a treatment facility. 

    ° Since the onset of the outbreak, 836 contacts were identified. All contacts have successfully completed the required 21-day follow-up period with 6 secondary cases detected, indicating that known transmission chains have been effectively contained. 

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France

    ° No additional Bundibugyo virus disease (BVD) cases have been reported in France since the previous update. No secondary transmission has been identified among the five flight contacts who were placed under precautionary quarantine following exposure to the imported case reported on 24 June 2026.

    ° Their formal release from follow-up had not been officially announced at the time of reporting. 

Risk Assessment 

    ° The overall public health risk in the Democratic Republic of the Congo remains very high, driven by sustained transmission, increasing mortality, and continued geographic expansion from three to five affected provinces. 

    ° Although transmission remains concentrated in Ituri Province, the emergence of new affected health zones in HautUélé and Tshopo highlights the continued potential for spread to previously unaffected areas. 

    ° The increasing crude CFR and the high proportion of community deaths continue to indicate delays in case detection, isolation, and access to clinical care. 

    ° Contact tracing remains below the operational target, particularly in Ituri Province, where follow-up performance is substantially lower than in North Kivu despite accounting for the majority of ongoing transmission. 

    ° Uganda remains at high risk of re-introduction because of the ongoing outbreak in the neighbouring Democratic Republic of the Congo despite reporting no new cases during the reporting period. 

    ° The absence of secondary transmission following the imported case in France demonstrates the effectiveness of rapid public health measures but also underscores the continued risk of international spread through travel. 

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Source: 

Link: https://www.afro.who.int/countries/democratic-republic-of-congo/publication/ebola-bundibugyo-virus-disease-outbreak-2

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