Epidemiology

Disease Outbreaks Disease Surveillance Infectious Diseases Disease Statistics Disease Transmission Disease Spread Disease Prevention Disease Trends Disease Control Outbreaks

Peru Confirms H3N2 Subclade K Cases, Elevates Surveillance as Variant Reaches Latin America

Health agencies urge risk‑group vaccination plus masks when symptomatic to blunt holiday‑season transmission.

WHO Says Early H3N2 ‘Subclade K’ Flu Wave Is Straining Hospitals Across Europe

Norovirus Activity Climbs Nationwide as LA County Wastewater Signals Surge

Measles Outbreaks Worsen in South Carolina and Along the Arizona–Utah Border as Michigan Flags Hospital Exposure

St. Joseph School in Medford Extends Closure for Deep Cleaning After Stomach Illness Surge

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Peru Confirms Two Pediatric H3N2 Subclade K Cases as Region Ramps Up Flu Precautions

Indoor Tanning Nearly Triples Melanoma Risk as Study Maps DNA Damage Across the Skin

Genetic Study Narrows Alcohol–Cancer Links as Major Review Reaffirms Broad Risks

Colorado Confirms 3 New Measles Cases, Pushing 2025 Total to 36

Mexico Confirms First H3N2 Subclade K Case as WHO Flags Wider Global Spread

South Carolina Measles Outbreak Grows to 126 Cases as Hundreds Are Quarantined

Measles Rebounds in the Americas as Mexico Risks Losing Status and U.S. Outbreaks Persist

Norovirus Activity Climbs Early Across U.S. as UK Reports Smaller Rise

Spain Expands RSV Vaccination to High-Risk Adults as Argentina Sets Jan. 12 Start for Maternal Campaign

Mexico Confirms First Case as Fast-Spreading H3N2 Subclade K Drives Early Flu Surge

Shingles Vaccine Linked to Lower Dementia Risk and Fewer Deaths in New Analysis

Major Review Links Even Moderate Drinking to Higher Cancer Risk

South Carolina Measles Outbreak Accelerates With Hundreds Quarantined

CDC Study Finds 2024–25 COVID-19 Vaccine Cut Pediatric ER and Urgent-Care Visits

Oregon Sets Record for Whooping Cough Cases in 2025