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CDC Issues Level 2 Travel Notice for Costa Rica’s Guanacaste Over Chikungunya Outbreak

Travelers are urged to take enhanced mosquito precautions because the outbreak poses risks for pregnant women and could hit tourism in Guanacaste.

Washtenaw County Confirms Seventh Measles Case, Flags ER Exposure

Madison Confirms Hotel-Linked Measles Exposure as Officials Seek Contacts

Chikungunya Surge in Bolivia Triggers Maximum Alert in Santa Cruz as Salta Confirms Six Cases

Russian Health Officials Deny Adenovirus Pandemic Risk After Media Claims

Buenos Aires Province Reports Three Hantavirus Deaths After New Lab Confirmation

Japanese Encephalitis Virus Found in Horsham Mosquitoes Triggers Health Response

Salt Lake County Reports Probable First Measles Case After Patient Declines Testing

Measles Alerts Issued for Gold Coast School Exposure and 16 Sunshine Coast Sites

Los Angeles County Confirms First Locally Acquired Dengue Case of 2025

Cook County Confirms Third Measles Case of 2025 as Crestwood Aldi Shoppers Get Exposure Alert

Measles Resurgence: OC Toddler Isolated, Cook County Logs Third Case as U.S. Total Reaches 1,514

New Mexico Confirms Second Human Plague Case of 2025 in Bernalillo County

Canada Logs First Domestic West Nile Virus Case of 2025

Los Angeles County Faces Largest Hepatitis A Outbreak in Over a Decade

Suspected 'Disease X' in Congo Identified as Malaria Outbreak

Year-Round Tick Activity in Urban Areas Raises Health Concerns