Health ❯ Epidemiology

Disease Surveillance

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U.S. Measles Cases Hit 35-Year High

Falling MMR coverage has created immunity gaps that officials say could prompt PAHO to reassess the U.S. measles elimination status in November.

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

U.S. Measles Cases Surpass Last Year’s Total and Put Elimination Status at Risk

Four Dead, 76 Cases in Upper East Side Legionnaires' Cluster

West Nile Virus Found in Mosquitoes in Two Maryland Counties

Five Measles Cases Tied to Out‑of‑State Travel Prompt Exposure Alert in Maryland

CDC Confirms Multistate Cyclosporiasis Outbreak Centered in Michigan

Early Multi-State Surge in West Nile Brings First Los Angeles Human Case

Anaplasmosis on the Rise in Eastern Canada as Doctors Urge Faster Treatment

Cyclospora Parasite Sickens Hundreds Across 31 States as Michigan Faces Largest Cluster

31 Upper East Side Cooling Towers Test Positive for Legionella

Cyclosporiasis Surge Centers on Michigan as Cases Spread Across About 30 States

Cyclospora Outbreak in Michigan Nears 1,000 Cases

Officials Investigate Cyclosporiasis Across 17 States as Michigan Reports Rapid Cluster

Early West Nile Surge Prompts Expanded Controls and 600,000 Wolbachia Mosquito Release in DC

West Nile Season Starts Early Across U.S., Dozens of Cases Confirmed

Powassan Virus Cases Reach Record High in the U.S.

West Nile Detected in Multiple States as Texas Confirms Neuroinvasive Case

Argentina Reports Surge in Tuberculosis Cases to 6,482 by Week 22

WHO Says July 2 Will Mark End of MV Hondius Hantavirus Outbreak If No New Cases