Analysis of disease outbreak developments worldwide.
Eastern Chad faces simultaneous measles and meningitis C outbreaks amid mass displacement from Sudan, while clade 1b mpox reaches Denmark.
H5N1 and H9N2 avian influenza cases emerge across Europe, Asia, and the Americas in early 2026 as WHO logs new human infections.
The CDC suppressed a peer-reviewed COVID vaccine efficacy report amid political tensions, raising alarm among public health experts over scientific integrity.
A hantavirus cluster on a cruise ship killed three and left one critically ill, while the US flu season closed with 149 child deaths and new TB data emerged.
Eastern Chad faces simultaneous measles and meningitis C outbreaks amid mass displacement from Sudan, compounding an already fragile health system.
Bangladesh reports 19,161 suspected measles cases and 166 deaths in one month; US cases near 1,800 as South Carolina closes its largest outbreak in 35 years.
A rare H9N2 avian flu case in Italy and ongoing H5N1 detections in the US and wildlife highlight a broad zoonotic influenza threat in 2026.
The CDC blocked publication of a completed vaccine efficacy study, raising concerns about scientific integrity and public health communication in the United States.
Eastern Chad faces simultaneous measles and meningitis C outbreaks among Sudanese refugees, as Denmark confirms a clade 1b mpox case in Europe.
ECDC's April 2026 surveillance reports highlight persistent cholera spread, chikungunya resurgence, and ongoing influenza activity across EU/EEA.
Bangladesh reports 19,000+ measles cases and 166 deaths across 58 districts, while the US nears 1,800 total cases amid a politically charged response.
The 2025–26 US flu season is closing with nearly 150 pediatric deaths and a vaccine effectiveness study, while federal policy shifts raise concerns.
H9N2 human cases reported in Italy and China while H5N1 resurfaces in US dairy cattle and poultry, raising renewed concerns about cross-species transmission.
ECDC monitors rising chikungunya transmission worldwide as the virus spreads to new regions via Aedes mosquitoes. Key facts for travelers and clinicians.
Dengue fever continues to spread across tropical and subtropical regions globally, with ECDC tracking elevated transmission levels into early 2026.
New research identifies six symptoms disproportionately common in long COVID, including pulmonary embolism, brain fog, and fatigue, with links to other post-viral syndromes.
With 23,000 flu deaths this season, new RSV mortality data and unexpected TB detections in Boston hospitals are reshaping the US respiratory disease picture.
The 2025-26 US flu season is receding, but 139 children have died — 85% unvaccinated — as Trump nominates a new CDC director.
The US measles outbreak has exceeded 1,700 cases in 2026, with Utah as the new epicenter, but weekly case counts are beginning to decline.
Shigellosis tied to Cabo Verde travel tops 1,000 cases across three continents, while new data raise alarms about RSV in older adults and TB detection.
The CDC has paused testing for rabies, mpox, and other pathogens amid an internal review, prompting state public health labs to expand their capacity.
A returning traveler in Italy and two new cases in China mark a fresh cluster of H9N2 human infections, prompting WHO notification and heightened surveillance.
Utah's measles outbreak has surpassed 600 cases, overtaking South Carolina as the most active in the US, with the national total exceeding 1,714 infections.
Multiple avian flu subtypes are active globally: H9N2 imported to Italy from Senegal, H5N1 in Cambodia and US flocks, and H7 in Taiwan.
Shigellosis linked to Cabo Verde travel has crossed 1,000 cases in the EU, UK, and US, while flu season winds down and nursing home antiviral data emerge.
CDC halts mpox and rabies testing amid efficacy review, shifting burden to state labs as global transmission persists into 2026.
ECDC tracks chikungunya's worldwide expansion as the mosquito-borne virus establishes footholds across the Americas, Asia, and parts of Europe.
ECDC monthly dengue update tracks sustained high transmission across tropical and subtropical regions, with Europe on alert for imported cases.
New case study finds Ebola viral traces in breast milk 14 weeks post-recovery, raising urgent questions about infant feeding safety during outbreaks.
New research finds vaccine-hesitant older adults respond better to autonomy-based messaging than government-compliance framing for COVID-19 shots.
The 2025-26 US flu season is declining but has claimed 139 child lives, with 85% of deaths in unvaccinated children.
The US measles outbreak has crossed 1,714 cases in 2026, with Utah now driving national transmission as South Carolina's outbreak winds down.