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Disease Surveillance

Epidemiology Infectious Diseases Infection Control Influenza Wastewater Monitoring Infectious Disease Control COVID-19 Variant Tracking CDC Wastewater Surveillance

Ebola Outbreak Expands to 24 Health Zones as Contact Tracing Falls Below 40%

Deteriorating surveillance threatens to let the outbreak spread beyond eastern Congo.

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Norovirus Levels High Nationwide as Pacific Crest Trail Outbreak Sickens Dozens

Wisconsin Confirms Five Mpox Cases as U.S. Sees Uptick

Vaccine-Derived Poliovirus Found in Perth Wastewater

Rotavirus Surge Across U.S. Drives Pediatric ER Visits

Peru Confirms 82 Measles Cases in Puno as Outbreak Reaches Six Provinces

Karnataka Declares Bengaluru Bird Flu Outbreak Contained, No Human Cases So Far

Argentina Chikungunya Outbreak Deepens as Salta Cases Jump 45% to 1,172

Rotavirus Activity Climbs Across U.S., With Spring Surge Hitting Young Children

Germany Expands FSME Risk Map as Tick Season Intensifies

Mexico’s Measles Wave Recedes as Peru Sounds Puno Alert and Argentina Reports First Chikungunya Death

UKHSA Issues Whooping Cough Alert With Audio Guide Urging Parents to Act

LA County Sets Record for Flea-Borne Typhus as Health Officials Urge Prevention

CDC Temporarily Halts Dozens of Disease Tests, Including Rabies and Poxvirus

‘Cicada’ COVID Variant Found in 25 U.S. States as WHO Puts BA.3.2 Under Monitoring

Okinawa Confirms First Measles Case of 2026

BA.3.2 Covid Variant Found in 23 Countries Shows Strong Immune Escape

‘Cicada’ COVID Variant BA.3.2 Detected in 25 U.S. States as Tracking Intensifies

CDC Tracks BA.3.2 COVID Variant With Heavy Spike Mutations as U.S. Detections Expand

Ceará Confirms Third Mpox Case as Minas Gerais Records Manhuaçu’s First