Ebola virus disease
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The Edge of Epidemiology • Infectious disease intelligence desk
by The Edge of Epidemiology
Open structured filters and quick outbreak shortcuts only when you need them.
The top active files reporters should scan first before dropping into the wider desk.
New publisher/source coverage joined this story cluster: KIRO 7 News Seattle, KVOA, wellcome.org.
The lead item has changed to Britain gets experimental drug from Japan to bolster hantavirus response from Reuters.
Cambodianess now explicitly uses investigation or monitoring language.
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The front page for the day: one short scan, one lead strip, and the secondary readings worth opening next.
The European Centre for Disease Prevention and Control (ECDC) is deploying experts to support the response to the ongoing Ebola disease outbreak in the Democratic Republic of the Congo (DRC).
Why it matters: Directly relevant to outbreak detection, transmission monitoring, or response. Comes from an official or primary-source channel.
Caveats / uncertainty: The summary stays close to the source language and should be read as an initial source note, not a final interpretation.
Publications mongem@who.int Mon, 18/05/2026 - 12:45 The Bulletin provides standardized updates on eSURV/ISS implementation, key performance indicators in WHO AFRO, aiding stakeholders in monitoring active surveillance progress, addressing gaps, and guiding evidence-based decisions at regional and national, and subnational levels.
On 17 May 2026, the World Health Organization (WHO) declared the Ebola virus disease outbreak caused by Bundibugyo virus in the Democratic Republic of the Congo (DRC) a Public Health Emergency of International Concern.
* Statement updated to include new figures Eugene Kabambi Communications Officer WHO DRC Tel : +243 81 715 1697 Office : +47 241 39 027 Email: kabambie [at] who.int (kabambie[at]who[dot]int) Collins Boakye-Agyemang Communications and marketing officer Tel: + 242 06 520 65 65 (WhatsApp) Email: boakyeagyemangc [at] who.int (boakyeagyemangc[at]who[dot]int) carousel-bg The Bundibugyo species was first identified in 2007 in Bundibugyo district in western Uganda, during which 131 cases were reported with 42 deaths (case fatality rate of 32%). Laboratory analysis conducted by the National Institute of Biomedical Research (INRB), the country’s reference laboratory in the capital Kinshasa, confirmed the Ebola outbreak caused by the Bundibugyo species in 8 of 13 samples* collected from suspected cases linked to a cluster of severe illness and deaths reported in Mongbwalu and Rwampara health zones in Ituri Province.
Preliminary laboratory results indicate a non-Zaire ebolavirus species, with further analysis ongoing.
Major outbreaks, regional developments, and the cross-border signals worth following now.
New publisher/source coverage joined this story cluster: KIRO 7 News Seattle, KVOA, wellcome.org.
The lead item has changed to Britain gets experimental drug from Japan to bolster hantavirus response from Reuters.
Cambodianess now explicitly uses investigation or monitoring language.
1 newly observed linked item(s) were added since the last saved snapshot.
The lead item has changed to Eponymous neurologic signs of tabes dorsalis: A historical review (1846-1905). from PubMed Historical Pathogen Case Studies.
The lead item has changed to Modeling the potential public health and economic impact and cost-effectiveness of vaccination strategies using an adapted COVID-19 vaccine in Guatemala. from PubMed Infectious Disease Search.
ECDC activates the EU Health Task Force, deploying experts to support Ebola outbreak response
Britain gets experimental drug from Japan to bolster hantavirus response
The evergreen layer: disease intelligence sheets, outbreak backstory, literature worth saving, and the historical corner.
Pathogen: Ebola viruses, including Bundibugyo virus in the current DRC/Uganda outbreak
Transmission: Direct contact with blood, body fluids or contaminated materials
Ebola remains a defining outbreak-desk disease because healthcare transmission, funeral practices, laboratory capacity, community trust, and international alarm can all move faster than the confirmed count.
Pathogen: Hantaviruses, including Andes virus in the Americas
Transmission: Rodent exposure; limited person-to-person transmission has been documented for Andes virus
This is a rare but frightening severe-disease story where a single unusual cluster can force questions about travel safety, rodent exposure, and whether Andes-virus-style person-to-person spread is in play.
Pathogen: Measles virus
Transmission: Airborne and respiratory
Measles is a clean reporter desk disease because it reveals vaccination gaps, school and household spread, travel-linked importation, and public-health capacity all at once.
Pathogen: Bacillus anthracis
Transmission: Contact with infected animals or contaminated animal products
Anthrax is a strong local accountability story because livestock practices, slaughter exposure, and rural reporting gaps can hide serious outbreaks in plain sight.
Pathogen: Influenza A(H5N1)
Transmission: Animal-to-human exposure; no sustained person-to-person spread identified in the cited U.S. outbreak
H5N1 is one of the few diseases where occupational exposure, food systems, animal surveillance, and pandemic-risk communications all converge in the same file.
Pathogen: Chikungunya virus
Transmission: Aedes mosquitoes
Chikungunya is a high-quality reporter disease because explosive outbreaks can be large, visually obvious, and politically disruptive even when mortality stays low.
Pathogen: Vibrio cholerae
Transmission: Waterborne and sanitation linked
Cholera is one of the clearest diseases for showing how water, war, displacement, climate shocks, and state capacity become mortality.
Pathogen: Dengue virus
Transmission: Aedes mosquitoes
Dengue is now one of the best climate-and-city disease stories on earth because mosquito range, urban crowding, and health-system stress all show up in it.
Pathogen: Hantaviruses, including Andes virus in the Americas
Transmission: Rodent exposure; limited person-to-person transmission has been documented for Andes virus
Cruise-ship linked cluster — WHO reported seven cases, including two laboratory-confirmed infections, three deaths, one critically ill patient and three mild suspected cases linked to cruise-ship travel.
Source: WHO Disease Outbreak News
Why reporters care: This is a rare but frightening severe-disease story where a single unusual cluster can force questions about travel safety, rodent exposure, and whether Andes-virus-style person-to-person spread is in play.
Desk note: Useful for rare severe respiratory clusters with rodent ecology or unusual travel-linked spread.
Research caveat: Small case counts and heterogeneous hantavirus species mean early claims about transmission mode can be unstable.
Pathogen: Measles virus
Transmission: Airborne and respiratory
United States resurgence — CDC's national measles summary reported 2,288 confirmed U.S. measles cases in 2025, with most cases outbreak-associated and many linked to outbreaks that crossed jurisdictions.
Source: CDC Measles Cases and Outbreaks
Why reporters care: Measles is a clean reporter desk disease because it reveals vaccination gaps, school and household spread, travel-linked importation, and public-health capacity all at once.
Desk note: This is the disease to watch when vaccination gaps, school clusters, or travel-linked introductions begin to stack.
Research caveat: Administrative case totals and media tallies can lag or mix confirmed and probable cases across jurisdictions.
Pathogen: Influenza A(H5N1)
Transmission: Animal-to-human exposure; no sustained person-to-person spread identified in the cited U.S. outbreak
Multistate U.S. dairy and poultry outbreak — CDC described an ongoing multistate H5N1 outbreak in dairy cows, poultry and other animals, with 70 confirmed human infections in the United States since April 2024 and no identified person-to-person spread.
Source: CDC Bird Flu Response Update
Why reporters care: H5N1 is one of the few diseases where occupational exposure, food systems, animal surveillance, and pandemic-risk communications all converge in the same file.
Desk note: A top-tier reporter desk disease because animal, occupational, food-system and pandemic-risk lines all converge here.
Research caveat: Risk estimates change fast because surveillance intensity varies by farm system, species, and jurisdiction.
Pathogen: Monkeypox virus, including clade Ib and clade IIb
Transmission: Close physical contact, including sexual contact; household and healthcare transmission also occur
Broader clade Ib transmission — WHO reported broader transmission of clade Ib mpox, including locally acquired infections in multiple WHO regions and continued substantial outbreaks in African countries.
Source: WHO Disease Outbreak News
Why reporters care: Mpox keeps generating news because social transmission networks, travel, stigma, clade differences, and global inequity collide in a single outbreak story.
Desk note: The key distinction to preserve is clade, mode of spread, and whether cases are travel-linked or locally acquired.
Research caveat: Case ascertainment varies heavily with access to testing and with how stigmatized the exposed population is.
Pathogen: Poliovirus, especially circulating vaccine-derived poliovirus type 2 in the cited event
Transmission: Fecal-oral, water and sanitation linked
cVDPV2 detection in healthy children and environment — WHO classified the Papua New Guinea cVDPV2 detections as a polio outbreak after linked type 2 poliovirus was found in environmental samples and in stool specimens from two healthy children in Morobe province.
Source: WHO Disease Outbreak News
Why reporters care: Polio is a near-eradication story where environmental detections, asymptomatic carriage, and vaccination politics matter as much as paralytic disease.
Desk note: Environmental detections matter here even when paralytic disease is not yet evident.
Research caveat: A single detection can matter a great deal, but risk interpretation depends on sequencing context and surveillance quality.
Pathogen: Vibrio cholerae
Transmission: Waterborne and sanitation linked
Ongoing global cholera upsurge — WHO's epidemiological update #36 reported 18,715 new cholera and acute watery diarrhoea cases and 269 deaths in February 2026 across 17 countries, with the highest burden in the African Region.
Source: WHO Cholera Epidemiological Update #36
Why reporters care: Cholera is one of the clearest diseases for showing how water, war, displacement, climate shocks, and state capacity become mortality.
Desk note: One of the clearest diseases where fragile infrastructure, displacement and mortality can move fast enough to outrun media attention.
Research caveat: Counts are often underestimates, and suspected-case definitions can vary sharply across humanitarian settings.
Pathogen: Dengue virus
Transmission: Aedes mosquitoes
Unprecedented global 2024 surge — WHO's 2024 update recorded 14,434,584 dengue cases worldwide, including 11,201 deaths, with more than 90% of reported cases coming from the Region of the Americas.
Source: WHO Weekly Epidemiological Record
Why reporters care: Dengue is now one of the best climate-and-city disease stories on earth because mosquito range, urban crowding, and health-system stress all show up in it.
Desk note: This belongs near the top of any global outbreak desk because climate, vector range and urban vulnerability all keep widening the playing field.
Research caveat: Reported case totals can surge when testing changes, and severity comparisons across countries are often not apples to apples.
Pathogen: Yellow fever virus
Transmission: Mosquito-borne
Americas resurgence — WHO reported 212 confirmed yellow fever cases and 85 deaths in the Americas as of late April 2025, a threefold increase over 2024 totals.
Source: WHO Disease Outbreak News
Why reporters care: Yellow fever matters because a rise in sylvatic spillover, urban encroachment, or vaccine gaps can turn a seemingly remote arbovirus story into a major regional emergency.
Desk note: When sylvatic transmission escapes its expected geography, this deserves very fast escalation.
Research caveat: Small outbreaks can still matter a lot, and cross-country comparisons are complicated by uneven surveillance and vaccination histories.
Pathogen: Chikungunya virus
Transmission: Aedes mosquitoes
2025 global resurgence — WHO reported 445,271 suspected and confirmed chikungunya cases and 155 deaths globally between 1 January and 30 September 2025, with outbreaks and resurgence across 40 countries.
Source: WHO Disease Outbreak News
Why reporters care: Chikungunya is a high-quality reporter disease because explosive outbreaks can be large, visually obvious, and politically disruptive even when mortality stays low.
Desk note: A good desk will watch chikungunya alongside dengue because the vectors, differential and public-health burden overlap.
Research caveat: Many surveillance systems blur suspected and confirmed cases, and long-term symptom burden is often undercounted.
Pathogen: Ebola viruses, including Bundibugyo virus in the current DRC/Uganda outbreak
Transmission: Direct contact with blood, body fluids or contaminated materials
2026 Bundibugyo Ebola outbreak — Africa CDC declared the ongoing Bundibugyo ebolavirus disease outbreak affecting DRC and Uganda a Public Health Emergency of Continental Security on 18 May 2026, reporting about 395 suspected cases and 106 associated deaths in DRC and two cases with one death in Kampala, Uganda.
Source: Africa CDC PHECS declaration
Why reporters care: Ebola remains a defining outbreak-desk disease because healthcare transmission, funeral practices, laboratory capacity, community trust, and international alarm can all move faster than the confirmed count.
Desk note: Track the gap between suspected deaths and confirmed cases, not just the latest confirmed total. For fast-moving Ebola, testing delays, unsafe burials, health-worker infections, and contact follow-up failures are outbreak intelligence.
Research caveat: Early Ebola counts are often an accounting artifact as much as an epidemic curve. When access, insecurity, transport, and laboratory confirmation lag, suspected cases and deaths can be a better warning signal than confirmed cases alone.
Pathogen: Marburg virus
Transmission: Direct contact with body fluids, contaminated materials and infected animal reservoirs
First recorded Ethiopian outbreak — WHO reported 19 total Marburg cases, including 14 confirmed and 14 deaths overall when probable cases are included, in Ethiopia's first recognized Marburg outbreak.
Source: WHO Disease Outbreak News
Why reporters care: Marburg matters because even small clusters can force rapid reassessment of differential diagnosis, hospital preparedness, and regional spillover risk.
Desk note: Any unexplained hemorrhagic fever cluster in East Africa now has a slightly wider differential than it did a few years ago.
Research caveat: Outbreaks are usually small, so it is easy to overinterpret noisy early severity estimates.
Pathogen: MERS-CoV
Transmission: Camel-to-human spillover and close-contact spread, especially in healthcare settings
Global update with Saudi and travel-associated French cases — WHO reported 19 MERS cases and four deaths globally in 2025 through 21 December, including healthcare-linked transmission in Saudi Arabia and imported cases in France.
Source: WHO Disease Outbreak News
Why reporters care: MERS remains a prototype hospital-cluster and travel-linked importation story where a modest case count can still matter a lot.
Desk note: For newsroom use, the hospital-cluster angle is often more important than the raw case count.
Research caveat: Severe-case bias can distort apparent fatality and make mild transmission less visible.
Pathogen: Bacillus anthracis
Transmission: Contact with infected animals or contaminated animal products
Cattle-linked cutaneous anthrax cluster — WHO reported confirmed human anthrax cases linked to cattle slaughter in Thailand, including at least one death and multiple hospitalized cutaneous anthrax cases.
Source: WHO Disease Outbreak News
Why reporters care: Anthrax is a strong local accountability story because livestock practices, slaughter exposure, and rural reporting gaps can hide serious outbreaks in plain sight.
Desk note: Anthrax belongs in the desk because agricultural exposure clusters are often deeply local and easy to miss.
Research caveat: Early reports may not separate suspected cutaneous lesions from confirmed systemic disease.
Pathogen: Rift Valley fever virus
Transmission: Mosquito-borne and direct animal exposure
West African cross-border outbreak — WHO reported 404 confirmed human Rift Valley fever cases and 42 deaths across Mauritania and Senegal, with continued concern about mosquito ecology and livestock movement.
Source: WHO Disease Outbreak News
Why reporters care: Rift Valley fever is one of the best One Health reporting files because rainfall, livestock, mosquitoes, and human disease all move together.
Desk note: This is classic One Health territory: weather, vectors, herds and human illness all move together.
Research caveat: Human and animal surveillance rarely line up perfectly, so early burden estimates can understate the scale.
Pathogen: Oropouche virus
Transmission: Midge and mosquito bites
Americas expansion — WHO reported 11,634 confirmed Oropouche cases and two deaths across ten countries and one territory as of 25 November 2024, with regional spread into places not previously reporting cases.
Source: WHO Disease Outbreak News
Why reporters care: Oropouche deserves attention because it can masquerade as dengue-like illness while signaling that arboviral ecology is shifting into new places.
Desk note: Worth keeping visible because it can hide inside dengue-like syndrome surveillance.
Research caveat: Because testing is patchy, apparent expansion can reflect both true spread and better recognition.
Pathogen: Corynebacterium diphtheriae
Transmission: Respiratory droplets and close contact
African Region multi-country outbreak — WHO reported 20,412 suspected diphtheria cases and 1,252 deaths across eight African countries in 2025, with Nigeria carrying the largest share of the burden.
Source: WHO Disease Outbreak News
Why reporters care: Diphtheria is a strong communications disease because it turns abstract vaccination decline into immediately legible airway and mortality risk.
Desk note: Diphtheria should function as a vaccination-systems alarm bell in this product.
Research caveat: Case definitions and laboratory confirmation can lag badly in large, stressed outbreaks.
Pathogen: Zika virus
Transmission: Aedes mosquitoes; vertical and sexual transmission also documented
Brazil-centered Americas epidemic — WHO's fact sheet still anchors the defining recent major Zika outbreak in the Brazil-led 2015 epidemic that triggered the 2016 PHEIC over microcephaly and congenital abnormalities.
Source: WHO Fact Sheet
Why reporters care: Zika matters because congenital outcomes, pregnancy guidance, travel messaging, and mosquito ecology can turn a mild-adult disease story into a major public-health communications event.
Desk note: For a reporter desk, congenital impact matters as much as raw incident case counts.
Research caveat: Serology is messy because of flavivirus cross-reactivity, so burden estimates and exposure histories can be difficult to interpret cleanly.
Pathogen: Nipah virus
Transmission: Bat spillover, contaminated food exposure, and person-to-person spread in close-contact settings
Kerala cluster — Recent South Asian Nipah reporting has continued to center on Kerala, where public-health responses have emphasized rapid contact tracing, hospital precautions, and fruit-bat spillover concern.
Source: WHO disease information
Why reporters care: Nipah is one of the few pathogens where even a small cluster can raise immediate questions about encephalitis, respiratory spread, hospital amplification, and pandemic risk.
Desk note: Nipah deserves special attention because respiratory and encephalitic framing can shift fast, and hospital spread matters.
Research caveat: Nipah outbreaks are often small and intensely scrutinized, which makes early severity and transmission claims prone to swing.
Pathogen: Legionella bacteria, especially Legionella pneumophila
Transmission: Aerosolized contaminated water; not usually person-to-person
Building and facility clusters — Legionnaires' disease remains a recurring built-environment outbreak problem, with cases often linked to cooling towers, healthcare facilities, hotels, and complex water systems rather than a single modern global event.
Source: CDC overview
Why reporters care: Legionnaires' is a very good local-news and accountability disease because buildings, hospitals, hotels, and cooling towers turn infrastructure failure into human pneumonia clusters.
Desk note: This is a strong reporter-desk disease because it sits at the intersection of environmental systems, hospitals, and local accountability.
Research caveat: Outbreak attribution can change as environmental testing catches up, so early blame assignment is often noisy.
Pathogen: Bordetella pertussis
Transmission: Respiratory droplets
Post-pandemic resurgence pattern — Recent pertussis reporting has reflected broader post-pandemic resurgence patterns, with public-health attention on school clusters, infant protection, and under-recognition in older age groups.
Source: CDC overview
Why reporters care: Pertussis repeatedly becomes news because it combines school spread, infant risk, vaccine debates, and underrecognized adult transmission.
Desk note: Worth keeping on the desk because infant risk, school spread, and booster debates all make it newsy.
Research caveat: Reported burden depends heavily on testing intensity and clinical suspicion, so many systems still undercount adult disease.
Pathogen: Neisseria meningitidis
Transmission: Respiratory and close-contact spread
Expanding meningitis belt pressure — WHO and regional reporting have continued to emphasize recurrent meningococcal meningitis pressure across meningitis-belt countries, where serogroup shifts and strained health systems can rapidly change outbreak control needs.
Source: WHO meningitis fact sheet
Why reporters care: Meningococcal disease is intensely newsworthy because it is fast, terrifying, often affects schools or young adults, and can force rapid public-health action.
Desk note: This belongs on the desk because local clusters can become national panic stories very quickly.
Research caveat: Single severe cases attract huge attention, but outbreak significance depends on linkage, serogroup, and public-health confirmation.
Pathogen: Plasmodium parasites, especially Plasmodium falciparum and Plasmodium vivax
Transmission: Anopheles mosquitoes
Persistent high-burden global transmission — WHO's recent malaria reporting continues to frame malaria less as a single outbreak than as a persistent high-burden transmission crisis shaped by insecticide resistance, climate variability, and health-system fragility.
Source: WHO malaria fact sheet
Why reporters care: Malaria is a foundational global-health reporting file because it links endemic burden, climate, resistance, conflict, childhood mortality, and rural neglect.
Desk note: Malaria deserves broader retrieval because a lot of important rural transmission news never gets framed as a headline outbreak.
Research caveat: Routine surveillance often underestimates burden, and comparisons across countries depend heavily on testing access and reporting completeness.
Pathogen: Norovirus
Transmission: Fecal-oral, foodborne, waterborne, and environmental contamination
Recurring cruise and institutional outbreaks — Norovirus remains one of the most recurrent outbreak categories for cruise ships, schools, and long-term-care facilities, with rapid attack rates and heavy local reporting but inconsistent national attention.
Source: CDC overview
Why reporters care: Norovirus is highly useful for a desk because it produces the kind of explosive local outbreak that readers immediately understand, especially on cruise ships and in institutions.
Desk note: This is one of the most reliable high-volume local outbreak categories and should be surfaced more aggressively.
Research caveat: Local outbreaks are numerous and inconsistently reported, so media visibility can badly misrepresent actual burden.
Pathogen: Hepatitis A virus
Transmission: Fecal-oral, foodborne, and close-contact spread
Recurrent foodborne and community outbreaks — Modern hepatitis A reporting repeatedly centers on foodborne clusters and prolonged community transmission in settings with sanitation stress or low vaccination coverage.
Source: CDC overview
Why reporters care: Hepatitis A is useful because it can move between foodborne recall, encampment, homelessness, travel, and sanitation stories without changing pathogen.
Desk note: Hepatitis A is a good example of a disease that toggles between local sanitation story, foodborne recall story, and vaccination story.
Research caveat: Long incubation makes exposure reconstruction difficult, so early source attribution can be shaky.
Pathogen: Rabies virus and related lyssaviruses
Transmission: Animal bites and saliva exposure
Persistent rural dog-mediated burden — WHO continues to frame rabies as a preventable but still deadly disease concentrated in underserved settings where dog vaccination and post-exposure prophylaxis access remain inadequate.
Source: WHO fact sheet
Why reporters care: Rabies remains one of the starkest diseases in communications because nearly every symptomatic human case is a preventable systems failure.
Desk note: This is exactly the kind of severe rural infectious-disease burden that can disappear if the intake is too urban and too English-headline dependent.
Research caveat: Human case counts are often severe underestimates because diagnostic confirmation is limited where burden is highest.
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