The organisms tick vectors transmit to cause Lyme disease. Pathogen pages render the same shape as tick and disease entries — range, vectors, and the diseases they cause.
| Pathogen | Scientific name | One-liner |
|---|---|---|
| Borrelia burgdorferi | Borrelia burgdorferi sensu stricto | Spirochete that causes Lyme disease in the eastern US (carried by Ixodes scapularis) and on the west coast (carried by Ixodes pacificus). |
| Borrelia mayonii | Borrelia mayonii | Lyme-disease-causing spirochete first identified in 2013 in upper-midwest deer ticks; produces a distinctive diffuse rash and high spirochetal load. |