Where to Find Current Data

Last updated: June 2026

If you want to go deeper than what's on this site, here are the actual primary sources, including a direct link to CDC's own page for every disease covered on this site.

General Tick and Disease Information

• CDC: About Ticks and Tickborne Disease — CDC's main overview page, with links out to every disease they track.
• CDC: Tick Bite Prevention — The official prevention guidance this site's prevention pages are checked against.
• CDC: What to Do After a Tick Bite — CDC's own removal and aftercare steps.

CDC Pages for Each Disease

• Lyme Disease
• Rocky Mountain Spotted Fever
• Anaplasmosis
• Ehrlichiosis
• Alpha-Gal Syndrome, including their printable hunter brochure
• Powassan Virus
• Babesiosis
• Tularemia

Data and Surveillance

• CDC Tick Bite Data Tracker — Emergency department visit data updated regularly. Shows bite visit rates by week, region, age, and sex.
• CDC Tickborne Disease Surveillance Summary — Reported cases by disease and year.
• CDC Geographic Distribution of Tickborne Disease Cases — Reported cases by county of residence.
• CDC Tickborne Pathogen Surveillance Maps — Where specific pathogens have been found in ticks by county.
• CDC Blacklegged Tick Surveillance, Lone Star Tick Surveillance, and American Dog Tick Surveillance — County-level maps for each of these three species.
• HHS May 2026 Lyme Disease Initiative — Full text of the federal announcement.
• TickEncounter Resource Center (URI) — Population data, tick identification, and the TickSpotters surveillance system where you can submit photo IDs of ticks you've found.

I try to keep the rest of this site updated as new research and federal actions come out, but the primary sources above will always be more current than any single site, including this one.