Latest WHO signal
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continues to evolve rapidly, with sustained transmission and increasing numbers of reported cases. As of 1 July, a cumulative of 1460 confirmed cases, including 452 deaths, have been reported from the Democratic Republic of the Congo. As of 2 July, Uganda has reported 20 confirmed cases including two deaths, as well as one probable case who has died. In addition, on 24 June 2026, French authorities notified WHO of a laboratory-confirmed case of Ebola disease caused by Bundibugyo virus in a medical doctor returning from the Democratic Republic of the Congo. In Uganda, the outbreak remains epidemiologically linked to transmission originating in the Democratic Republic of the Congo, with evidence of both imported infections and secondary transmission among contacts and healthcare workers. Uganda has not reported any new cases since 21 June 2026. National authorities in the two affected countries, in collaboration with WHO and partners, are implementing an extensive set of response measures. A regional preparedness and prioritization framework continues to guide readiness activities across the African Region.
WHO assessment excerpt
Read WHO Disease Outbreak NewsOn 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 (BVDV) detection, currently the Democratic Republic of the Congo and Uganda, has been separated out 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 th...
WHO Disease Outbreak News
Latest stored outbreak signals
Cards are ordered by WHO publication date. Risk labels are World Vitals processing labels derived from WHO text; they do not replace WHO risk assessments.
03 Jul 20262026-DON612
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
high attentionThe Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continues to evolve rapidly, with sustained transmission and increasing numbers of reported cases. As of 1 July, a cumulative of 1460 confirmed cases, including 452 deaths, have been reported fro...
WHO source02 Jul 20262026-DON611
Hantavirus outbreak linked to cruise ship travel, Multi-locations
elevated watchThis is the fifth Disease Outbreak News posting on the Andes hantavirus (ANDV) outbreak linked to the cruise ship M/V Hondius. The outbreak identification followed the notification to the World Health Organization (WHO) on 2 May 2026 of severe acute respiratory illness cases onb...
WHO source25 Jun 20262026-DON609
Nipah virus disease - India
elevated watchOn 11 June 2026, the Kerala State Health Department confirmed one laboratory confirmed case of Nipah virus (NiV) infection in Kozhikode district, Kerala State, India. The case is an adult male who developed symptoms on 30 May 2026 and was hospitalized on 10 June 2026. He present...
WHO source24 Jun 20262026-DON610
Yellow fever - Global
elevated watchYellow fever is a viral disease found in areas of Africa and the Americas, spread by infected mosquitoes. Following an increase of cases in the Americas in 2025, transmission activity remained into 2026. From 1 January to 26 May 2026, six countries reported a total of 79 human i...
WHO source19 Jun 20262026-DON608
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
high attentionThe Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continues to evolve rapidly, with sustained transmission and increasing numbers of reported cases. As of 17 June, a cumulative of 896 confirmed cases, including 232 deaths, have been reported fro...
WHO source13 Jun 20262026-DON607
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
high attentionThe Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continues to evolve rapidly, with increasing case numbers and geographic spread. As of 10 June, a cumulative of 676 confirmed cases, including 136 deaths, have been reported from the Democratic R...
WHO source08 Jun 20262026-DON606
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
high attentionThe Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo continues to evolve rapidly, with increasing case numbers, geographic spread, and cross-border transmission to Uganda. As of 6 June, a total of 515 confirmed cases, with 91 deaths among these con...
WHO source29 May 20262026-DON605
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
watchThe Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo and Uganda continues to evolve rapidly, with increasing case numbers, geographic spread, and ongoing cross-border transmission. As of 27 May, a total of 906 suspected cases and 223 deaths among s...
WHO source28 May 20262026-DON604
Hantavirus outbreak linked to cruise ship travel, Multi-locations
elevated watchThis is the fourth Disease Outbreak News report on the Andes hantavirus outbreak linked to cruise ship travel, following the notification to the World Health Organization (WHO) on 2 May 2026 of severe respiratory illness cases aboard M/V Hondius, a cruise ship. Since the last DO...
WHO source21 May 20262026-DON603
Ebola disease caused by Bundibugyo virus – Democratic Republic of the Congo
high attentionOn 15 May 2026, the Ministry of Public Health, Hygiene and Social Welfare, Democratic Republic of the Congo (DRC), and the Ministry of Health of Uganda declared an outbreak of Ebola Disease following the confirmation of Bundibugyo virus disease (BVD) in both countries. On 17 May...
WHO source16 May 20262026-DON602
Ebola disease caused by Bundibugyo virus, Democratic Republic of the Congo & Uganda
high attentionOn 5 May 2026, the World Health Organization (WHO) was alerted of a high-mortality outbreak of unknown illness in Mongbwalu Health Zone, Ituri Province, Democratic Republic of the Congo (DRC), including deaths among health workers. On 14 May 2026, the Institut national de recher...
WHO source13 May 20262026-DON601
Hantavirus cluster linked to cruise ship travel, Multi-country
high attentionThis is the third Disease Outbreak News report on the hantavirus cluster, following the notification to the World Health Organization (WHO) on 2 May 2026 of severe respiratory illness cases aboard MV Hondius, a cruise ship. Since the last DON was published on 8 May, two addition...
WHO source08 May 20262026-DON600
Hantavirus cluster linked to cruise ship travel, Multi-country
high attentionOn 2 May 2026, a cluster of passengers with severe respiratory illness aboard a cruise ship was reported to the World Health Organization (WHO). At that time, according to the ship operator, 147 passengers and crew were onboard, and 34 passengers and crew had previously disembar...
WHO source04 May 20262026-DON599
Hantavirus cluster linked to cruise ship travel, Multi-country
high attentionOn 2 May 2026, a cluster of passengers with severe respiratory illness aboard a cruise ship was reported to the World Health Organization. The ship is carrying 147 passengers and crew. As of 4 May 2026, seven cases (two laboratory confirmed cases of hantavirus and five suspected...
WHO source23 Apr 20262026-DON598
Measles - Bangladesh
high attentionOn 4 April 2026, the National International Health Regulations (IHR) Focal Point for Bangladesh notified WHO of a nationwide increase in measles cases, geographically affecting 58 out of 64 districts across all eight divisions in Bangladesh. A total of 19 161 suspected measles c...
WHO source10 Apr 20262026-DON597
Avian Influenza A(H9N2) - Italy
elevated watchOn 21 March 2026, the National International Health Regulations (IHR) Focal Point for Italy notified the World Health Organization (WHO) of the identification of a human case of avian influenza A(H9) in an adult male returning from Senegal. Next generation sequencing confirmed I...
WHO source13 Mar 20262026-DON596
International food safety event: Infant formula and products containing arachidonic acid oil contaminated with cereulide toxin - Multi-country
elevated watchMulti-country recalls of infant formula and other products have been initiated after cereulide toxin, was detected in batches of multiple internationally distributed brands. Investigations have identified arachidonic acid (ARA) oil, used as an ingredient in the implicated produc...
WHO source14 Feb 20262026-DON595
Mpox: recombinant virus with genomic elements of clades Ib and IIb – Global situation
elevated watchRecombination of monkeypox virus (MPXV) strains has been documented in recent months, with two cases of a recombinant strain comprising clade Ib and IIb MPXV reported. Recombination is a known natural process that can occur when two related viruses infecting the same individual...
WHO source06 Feb 20262026-DON594
Nipah virus infection - Bangladesh
elevated watchOn 3 February 2026, the International Health Regulations National Focal Point (IHR NFP) for Bangladesh notified WHO of one confirmed case of Nipah virus (NiV) infection in Rajshahi Division. The patient developed fever and neurological symptoms on 21 January. Nipah virus infecti...
WHO source30 Jan 20262026-DON593
Nipah virus disease - India
watchOn 26 January 2026, the National IHR Focal Point for India notified WHO of two laboratory‑confirmed cases of Nipah virus (NiV) infection in West Bengal State. Both are healthcare workers at the same private hospital in Barasat (North 24 Parganas district). NiV infection was conf...
WHO source26 Jan 20262026-DON592
Marburg virus disease- Ethiopia
elevated watchOn 26 January 2026, the Ministry of Health of Ethiopia declared the end of the Marburg virus disease (MVD) outbreak. This declaration came after two consecutive incubation periods (a total of 42 days) since the last person confirmed with MVD died and was given a safe and dignifi...
WHO source24 Dec 20252025-DON591
Middle East respiratory syndrome coronavirus - Global update
high attentionSince the beginning of 2025 and as of 21 December 2025, a total of 19 cases of Middle East respiratory syndrome coronavirus (MERS- CoV), including four deaths have been reported to WHO globally. Of the 19 cases, 17 were reported by the Kingdom of Saudi Arabia (KSA), and two were...
WHO source10 Dec 20252025-DON586
Seasonal influenza - Global situation
high attentionSeasonal influenza (‘the flu’) is an acute respiratory infection caused by influenza viruses that circulate globally and year-round. It can cause illness ranging from mild to severe, sometimes resulting in hospitalization or death. Seasonal influenza activity has increased globa...
WHO source05 Dec 20252025-DON587
Broader transmission of mpox due to clade Ib MPXV – Global situation
high attentionThe purpose of this report is to raise awareness about the local transmission of clade Ib monkeypox virus (MPXV) among men who have sex with men (MSM) in countries previously unaffected or to date reporting only cases linked to travel. This report summarizes recent epidemiologic...
WHO source05 Dec 20252025-DON590
Avian Influenza A(H5N5)- United States of America
elevated watchOn 15 November 2025, WHO was notified of the 71st confirmed human case with influenza A(H5) since early 2024 in the United States of America— the first human case reported in the United States of America since February 2025. On 20 November, U.S. Centers for Disease Control and P...
WHO source01 Dec 20252025-DON589
Ebola virus disease – Democratic Republic of the Congo
elevated watchOn 1 December 2025, the Ministry of Health (MoH) of the Democratic Republic of the Congo (DRC) declared the end of the Ebola virus disease (EVD) outbreak which had been declared on 4 September 2025. The end was declared after two consecutive incubation periods (a total of 42 day...
WHO source21 Nov 2025DON588
Diphtheria - African Region (AFRO)
high attentionFrom 1 January to 2 November 2025, a total of 20 412 suspected diphtheria cases, including 1 252 deaths (an average case fatality ratio [CFR] - 6 %) have been reported across eight Member States in the WHO African Region (Algeria, Chad, Guinea, Mali, Mauritania, Niger, Nigeria,...
WHO source21 Nov 20252025-DON585
Marburg virus disease- Ethiopia
high attentionOn 12 November 2025, WHO noted a press release from the Ethiopian Ministry of Health (MoH), and the Ethiopian Public Health Institute (EPHI), announcing suspected viral hemorrhagic viral fever (VHF) in Jinka town, South Ethiopia Regional State, Ethiopia. On 14 November 2025, the...
WHO source05 Nov 20252025-DON584
Rift Valley fever- Mauritania and Senegal
high attentionBetween 20 September and 30 October 2025, a total of 404 confirmed human cases of Rift Valley fever (RVF), including 42 deaths, were reported by national health authorities in two West African countries: Mauritania and Senegal. RVF is a zoonotic disease, which mainly affects ani...
WHO source03 Oct 20252025-DON581
Chikungunya virus disease- Global situation
elevated watchIn 2025, a resurgence of chikungunya virus (CHIKV) disease was noted in a number of countries, including some that had not reported substantial case numbers in recent years. Between 1 January and 30 September 2025, a total of 445 271 suspected and confirmed CHIKV disease cases a...
WHO sourceMethod