Delaware Communicable Disease Surveillance — by County
What this means
Every state runs a secure web-based Disease Surveillance System that healthcare providers and labs use to report legally reportable conditions in real time — typically 70–100 conditions ranging from common infections like Lyme and salmonella to rare ones like Creutzfeldt-Jakob and anthrax. Aggregate reports are released weekly. State surveillance data drives public-health response when a case cluster emerges; data also rolls up to CDC's NNDSS for national tracking.
What you can do
- Suspect a reportable illness? Your doctor or lab will file it for you.
- For unusual illness clusters (e.g., 3+ people sick after the same event): call your county or state health department directly.
- Tick-bite illnesses (Lyme, anaplasmosis): the CDC tick-borne disease page has prevention and symptom guidance.
- For travel-related concerns or international exposures, the CDC Travel page covers risks by destination.
Official sources & resources
More health indicators