Seventeen species. Twenty-one reportable diseases. Three thousand counties of CDC surveillance. Tickpedia stitches them together so you can see where and when and how much — not just that ticks live in the woods.
CDC's mandatory case reporting registers roughly 30,000 to 40,000 Lyme disease cases per year. Analysis of commercial insurance claims by Kugeler and colleagues estimated 476,000 patients diagnosed and treated for Lyme each year between 2010 and 2018 - about an order of magnitude higher. Most diagnoses never reach the surveillance system.