New official outbreak reports, travel health notices, and significant week-over-week changes in reported activity. Each alert shows its source and publication date.
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The World Health Organization's official reports on confirmed or potential acute public-health events. WHO does not give them levels.
CDC Travel Health Notices
U.S. CDC advice for travelers. Level 1: practice usual precautions. Level 2: practice enhanced precautions. Level 3: reconsider nonessential travel. Level 4: avoid nonessential travel.
Activity changes
Written by OutbreakWatch from the latest current week of official data. They are not alerts issued by a health authority; each one names the data it is based on.
Excerpts
Card text is a shortened excerpt of the official notice. Tap the title to read the full notice on the authority's website.
Where:Multiple countries · Democratic Republic of the Congo, Nigeria, Kenya
Excerpt from World Health Organization:Since the publication of the previous Disease Outbreak News on 8 October 2026, the Bundibugyo virus disease (BVD) outbreak has expanded geographically in the Democratic Republic of the Congo, as well as in the African Region, with Kenya and Nigeria reporting imported cases. Sustained, high-level transmission continues in the Democratic Republic of the Congo. As of 20 October 2026, a total of 9704 confirmed cases, including 4687 deaths (crude case fatality ratio: 48.3%), have been reported across 66 health zones in eight provinces. The high proportion of deaths occurring in communities continue
Published Oct 23, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 1 – Practice Usual Precautions
Excerpt from U.S. CDC Travelers' Health:The Kenyan Ministry of Health has confirmed an imported case, as well as other linked cases, of Ebola disease caused by Bundibugyo virus in Nairobi, Kenya.
Published Oct 19, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Excerpt from U.S. CDC Travelers' Health:There is an outbreak of yellow fever in the Upper West Region of Ghana. Travelers to the Upper West Region should take steps to prevent yellow fever by getting vaccinated at least 10 days before travel and taking steps to prevent mosquito bites.
Published Oct 16, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Excerpt from World Health Organization:Between 1 January and 5 October 2026, the Kingdom of Saudi Arabia reported eight laboratory-confirmed cases of Middle East Respiratory Syndrome Coronavirus (MERS-CoV) infection, including one death. Cases were detected across six locations: Al Jouf (1), Arar (1), Hafr Al-Batin (1), Riyadh (2), Tabuk (1) and Taif (2). No epidemiological links were identified between any of the cases. All eight cases were symptomatic, most commonly presenting with fever (6/8), dyspnea (5/8), and cough (4/8). None were health and care workers. Infection was confirmed by RT-PCR testing. MERS is a zoonotic viral re
Published Oct 15, 2026 · World Health Organization — Disease Outbreak NewsShare card
Excerpt from World Health Organization:On 2 October 2026, WHO became aware through media reports of the death of an employee of the Irkutsk Antiplague Research Institute (APRI) of Siberia and the Far East, the Russian Federation. According to these reports, the individual died on 2 October following hospitalization for severe pneumonia on 29 September, and pneumonic plague was suspected as the cause of death, following occupational exposure in laboratory settings. Following requests for verification from WHO, the National Focal Point for the International Health Regulations (2005) (NFP) of the Russian Federation confirmed the death
Published Oct 10, 2026 · World Health Organization — Disease Outbreak NewsShare card
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:On 5 October 2026, WHO was informed about a laboratory-confirmed imported case of Bundibugyo virus disease (BVD) in Kenya with travel history from the Democratic Republic of the Congo. The patient travelled from the Democratic Republic of the Congo to Kenya through Uganda. The patient was hospitalized and treated in Kenya but subsequently died on 5 October. Public health response measures have been initiated in Kenya and Uganda, including contact tracing. Since the last Disease Outbreak News was published on 25 September 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Con
Published Oct 8, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 1 – Practice Usual PrecautionsDengue
Where:Global · 15 countries, including Colombia and Vietnam
Excerpt from U.S. CDC Travelers' Health:Dengue is a year-round risk in many parts of the world, with outbreaks commonly occurring every 2–5 years. Travelers to risk areas should prevent mosquito bites.
Published Oct 2, 2026 · U.S. CDC Travelers' HealthShare card
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:Since the last Disease Outbreak News was published on 11 September 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded further, with two additional health zones affected. These include Bulu health zone in a new province, Sud Ubangi, located on the north-west part of the country and Dungu health zone in Haut-Uélé province, bordering South Sudan. This brings the total number of affected health zones to 63 across seven provinces out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, Sud Ubangi and Tshopo. This latest geographic
Published Sep 25, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Where:Global · 29 countries, including Afghanistan and Algeria
Excerpt from U.S. CDC Travelers' Health:Some international destinations have circulating poliovirus. Before any international travel, make sure you are up to date on your polio vaccines.
Published Sep 23, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 1 – Practice Usual Precautions
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:Since the last Disease Outbreak News was published on 28 August 2026, the Bundibugyo virus outbreak in the Democratic Republic of the Congo has expanded to one additional health zone, Kayna, in North Kivu. This increase brings the total number of affected health zones to 61 across six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. As of 7 September 2026, the Democratic Republic of the Congo has reported 6757 confirmed cases, including 3267 deaths, resulting in a crude case fatality ratio (CFR) of 48.3%. The transmission dynamics remain varia
Published Sep 10, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:Since the last Disease Outbreak News was published on 14 August 2026, the outbreak has spread from 54 to 60 health zones. The number of affected provinces stands at six out of 26 provinces of the country: Bas-Uélé, Haut-Uélé, Ituri, North Kivu, South Kivu, and Tshopo. Six additional health zones reported cases since the last update - Ganga and Viadana health zones in Bas-Uélé province, Biena, Manguredjipa, and Mutwanga in North Kivu, and Tshopo health zone in Tshopo province. As of 26 August 2026, a total of 5794 confirmed cases, including 2786 deaths, have been reported, corresponding to a cr
Published Aug 28, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from U.S. CDC Travelers' Health:CDC recommends practicing enhanced precautions for travel to Uganda or to provinces in the Democratic Republic of the Congo (DRC) not affected by the current Bundibugyo virus disease (BVD) outbreak.
Published Aug 28, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 1 – Practice Usual Precautions
Excerpt from U.S. CDC Travelers' Health:Cases of paratyphoid fever are being reported in returning travelers from Yemen. You can prevent paratyphoid fever by practicing safe eating and drinking habits.
Published Aug 26, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 1 – Practice Usual Precautions
Where:Multiple countries · 8 countries, including Chad and Guinea
Excerpt from U.S. CDC Travelers' Health:There are outbreaks of diphtheria in several countries in Africa. Vaccination against diphtheria is essential to protect against the disease.
Published Aug 25, 2026 · U.S. CDC Travelers' HealthShare card
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo is in a phase of intense transmission. It is the largest Ebola outbreak ever reported in the country and expanding faster than any previous Ebola outbreak. The epidemic is increasingly characterized by sustained transmission within interconnected geographic clusters. Initially confined to the Mongbwalu health zone in Ituri Province, the outbreak has now expanded to 54 health zones across six provinces (Ituri, North Kivu, South Kivu, Haut-Uélé, Tshopo, and Bas-Uélé). The most recently affected Bas-Uélé province
Published Aug 14, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Excerpt from U.S. CDC Travelers' Health:Cases of Zika are being reported in returning travelers from Bali, Indonesia. All travelers to Bali should take steps to prevent mosquito bites and sexual transmission of Zika virus during and after travel.
Published Aug 7, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 4 – Avoid Nonessential Travel
Where:Part of a country · Ituri and Nord-Kivu Provinces, Democratic Republic of the Congo
Excerpt from U.S. CDC Travelers' Health:CDC recommends avoiding all travel to Ituri and Nord-Kivu (North-Kivu) provinces in the Democratic Republic of the Congo (DRC) due to the current Bundibugyo virus disease (BVD) outbreak unless traveling for humanitarian aid or emergency response.
Published Aug 4, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 3 – Reconsider Nonessential Travel
Where:Part of a country · Haut-Uélé and Tshopo Provinces, Democratic Republic of the Congo
Excerpt from U.S. CDC Travelers' Health:CDC recommends avoiding nonessential travel to Haut-Uélé and Tshopo provinces in the Democratic Republic of the Congo (DRC) due to the current Bundibugyo virus disease (BVD) outbreak.
Published Aug 4, 2026 · U.S. CDC Travelers' HealthShare card
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:The Bundibugyo virus disease (BVD) outbreak in the Democratic Republic of the Congo is intensifying, with sustained transmission and continued increases in reported cases and deaths. Initially confined to the Mongbwalu health zone in Ituri Province, over the last two months, the outbreak has expanded to five provinces (Ituri, North Kivu, South Kivu, Haut-Uélé and Tshopo), now affecting 49 health zones. The outbreak is now the largest Ebola outbreak ever reported in the Democratic Republic of the Congo. As of 30 July 2026, a total of 3605 confirmed cases, including 1587 deaths, have been report
Published Aug 1, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Excerpt from U.S. CDC Travelers' Health:There is an outbreak of chikungunya in northwest Costa Rica. You can protect yourself by preventing mosquito bites.
Published Jul 30, 2026 · U.S. CDC Travelers' HealthShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization: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 Uni
Published Jul 17, 2026 · World Health Organization — Disease Outbreak NewsShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization: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 return
Published Jul 3, 2026 · World Health Organization — Disease Outbreak NewsShare card
Excerpt from World Health Organization:This 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 onboard. Since the previous Disease Outbreak News was published on 28 May 2026, one of the probable cases from Tristan da Cunha, an Overseas Territory of the United Kingdom of Great Britain and Northern Ireland (hereafter referred to as the United Kingdom), was laboratory confirmed. As of 2 July, a total of 13 cases, inclu
Published Jul 2, 2026 · World Health Organization — Disease Outbreak NewsShare card
Excerpt from World Health Organization:On 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 presented with neurological manifestations and at the time of reporting is on ventilatory support in an intensive care unit (ICU). As of 18 June 2026, a total of 104 contacts had been identified and were under monitoring, including health and care workers, with no reported secondary cases to date. NiV is a zoonotic disease tra
Published Jun 25, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 1 – Practice Usual Precautions
Excerpt from U.S. CDC Travelers' Health:There is an outbreak of diphtheria in Haiti. Vaccination against diphtheria is essential to protect against the disease.
Published Jun 25, 2026 · U.S. CDC Travelers' HealthShare card
Excerpt from World Health Organization:Yellow 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 infections along with multiple epizootics, indicating active sylvatic circulation. In Africa, sustained activity continued across parts of the region, affecting 13 high-risk countries (as per classification in the Eliminate Yellow fever Epidemics (EYE) Strategy). From January to May 2026, three countries in Africa report
Published Jun 24, 2026 · World Health Organization — Disease Outbreak NewsShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization: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 17 June, a cumulative of 896 confirmed cases, including 232 deaths, have been reported from the Democratic Republic of the Congo. As of 18 June, Uganda has reported 19 confirmed cases including two deaths, as well as one probable case who has died. In Uganda, the outbreak remains epidemiologically linked to transmission originating in the Democratic Republic of the Congo, with evidence of both imported infec
Published Jun 19, 2026 · World Health Organization — Disease Outbreak NewsShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization:The 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 Republic of the Congo. As of 11 June, Uganda has reported 19 confirmed cases including two deaths, as well as one probable case who has died. In Uganda, the outbreak remains epidemiologically linked to transmission originating in the Democratic Republic of the Congo, with evidence of both imported infections and secondar
Published Jun 13, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Excerpt from U.S. CDC Travelers' Health:Increased cases of malaria have been reported in Yemen, including in areas that were previously considered low-risk.
Published Jun 11, 2026 · U.S. CDC Travelers' HealthShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization:The 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 confirmed cases, have been reported from the Democratic Republic of the Congo; Uganda has reported 19 confirmed cases including two deaths, as well as one probable case who has died. In Uganda, the outbreak remains epidemiologically linked to transmission originating in the Democratic Republic of the Congo, with evidence o
Published Jun 8, 2026 · World Health Organization — Disease Outbreak NewsShare card
CDC Travel Health NoticeLevel 1 – Practice Usual Precautions
Excerpt from U.S. CDC Travelers' Health:Manitoba, Canada is currently experiencing a hepatitis A virus (HAV) outbreak. HAV is contagious and spreads through close person-to-person contact and by eating contaminated food or drink.
Published Jun 4, 2026 · U.S. CDC Travelers' HealthShare card
CDC Travel Health NoticeLevel 2 – Practice Enhanced Precautions
Excerpt from U.S. CDC Travelers' Health:Increased cases of malaria have been reported in Mayotte. Malaria is spread by the bite of infected mosquitoes.
Published Jun 2, 2026 · U.S. CDC Travelers' HealthShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization:The 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 suspected cases have been reported in the Democratic Republic of the Congo. As of 29 May, a total of 134 confirmed cases, including nine in Uganda, with 18 deaths among the confirmed cases, have been reported across both countries. This is an additional 49 confirmed cases, eight confirmed deaths, 160 suspected cases and
Published May 29, 2026 · World Health Organization — Disease Outbreak NewsShare card
Excerpt from World Health Organization:This 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 DON was published on 13 May, three additional confirmed cases were reported, from Canada, the Netherlands, and Spain. The previously reported inconclusive case from the United States of America was subsequently determined to be negative following further laboratory testing and has been removed from the total case count. A
Published May 28, 2026 · World Health Organization — Disease Outbreak NewsShare card
Where:Country report · Democratic Republic of the Congo
Excerpt from World Health Organization:On 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 2026, the World Health Organization (WHO) Director-General determined that the Ebola disease caused by Bundibugyo virus in DRC and Uganda constitutes a public health emergency of international concern (PHEIC), as defined in the provisions of IHR. On 19 May 2026, the Director-General of WHO convened the first meeting of
Published May 21, 2026 · World Health Organization — Disease Outbreak NewsShare card
Where:Multiple countries · Democratic Republic of the Congo, Uganda
Excerpt from World Health Organization:On 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 recherche biomédicale (INRB) Kinshasa analyzed 13 blood samples from Rwampara Health Zone, Ituri Province. Laboratory analysis confirmed Bundibugyo virus disease (BVD) in eight of these samples on 15 May, a species of Ebola. The case fatality rates in the past two BVD outbreaks have ranged from 30% to 50%. Unlike Ebola virus
Published May 16, 2026 · World Health Organization — Disease Outbreak NewsShare card
