Health ❯ Epidemiology ❯ Disease Surveillance

Outbreak Investigation

Contact Tracing Case Reporting Laboratory Testing Democratic Republic of the Congo Cooling Towers Risk Assessment CDC Reports Measles Cases Public Health Response Case Management

WHO Declares PHEIC as Bundibugyo Ebola Spreads in Eastern Congo and Reaches Uganda

WHO has declared a global emergency to accelerate support because the rare Bundibugyo strain has no approved vaccine.

CDC Probes Drug-Resistant Salmonella Outbreak Tied to Backyard Poultry

Whooping Cough Outbreak Confirmed at Pasadena’s Don Benito School

CDC Probes Drug-Resistant Salmonella Outbreak Tied to Backyard Poultry in 13 States

Santa Fe Confirms Tetanus Case in 5-Year-Old With Severely Incomplete Vaccination

Brazil Confirms Second 2026 Measles Case in Rio

New York City Confirms First Case of More Severe Mpox Clade I Linked to Travel

Mexico’s 2025 Measles Outbreak Reaches 6,050 Cases and 24 Deaths

Ethiopia Confirms First Marburg Outbreak With Nine Cases in Omo

EHEC Outbreak in Mecklenburg‑Vorpommern Grows to 49 Cases as HUS Complications Rise

Harlem Legionnaires’ Outbreak Reaches 108 Cases, 5 Deaths as City Finishes Cooling-Tower Cleanup

One Dead as London, Ontario, Enters Second Legionnaires’ Outbreak in Two Years

Sydney Legionnaires’ Toll Rises to 15 Cases and One Death

Investigators Link Unnamed Supermarket Item to 95 Hepatitis A Cases in UK

UK’s Rare Salmonella Saintpaul Outbreak Appears Contained as Source Investigation Continues

Suspected Norovirus Outbreak Sickens 144 in Bavarian Restaurant

Cryptosporidium Outbreak at Welsh Farm Sickens 74, Hospitalizes 16

UKHSA Reports 28 Listeriosis Deaths in 2024, Issues New Warnings for Vulnerable Groups

Sydney Issues Health Alert as Legionnaires' Disease Outbreak Hospitalizes Six

Russia Denies Mystery Virus Claims as Public Anxiety Grows