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Midwest States Confirm New Eastern Equine Encephalitis Cases in Horses

State health agencies warn that ongoing mosquito activity raises risk to people and animals, urging vaccinations and bite prevention.

Florida Confirms Locally Acquired Dengue Case in Orange County

Widespread Rise in West Nile Cases Prompts Local Spraying and Warnings

Massachusetts Confirms Two Human West Nile Cases as Mosquito Positives Rise

U.S. Sees Widespread West Nile Surge as EEE Detected in Massachusetts

Long Beach Confirms California’s First Human West Nile Case of 2026

Texas Confirms First Human West Nile Case of 2026

Roseville Man's Death Is Placer County's First West Nile Fatality of 2025, Fifth in California

NY Probes Possible Local Chikungunya Case as West Nile Activity Rises in Northeast and Midwest

Albany County Confirms First West Nile Virus Case Since 2018

West Nile Season Intensifies With First LA Cases and Deaths Reported in Illinois and Michigan

First Human West Nile Cases Confirmed in Massachusetts and Delaware County as Mosquito Positives Surge

West Nile Virus Activity Intensifies With NYC’s First Human Cases and Maryland’s First of the Year

Austin Public Health Investigates First Suspected West Nile Virus Case in Travis County

Wisconsin, Texas and Toronto Report First West Nile Virus Human Cases of 2025

Early West Nile Virus Surge Drives Third Illinois Human Case, Elevated County Risk

West Nile Virus Detected in Mosquitoes Across McHenry and DuPage Counties