Bulletin #2357, Maine Farm Safety Program: Lyme Disease (PDF) By Dawna L. Cyr, Farm Safety Project Assistant, and Steven B. Johnson, Ph.D., Extension Crops Specialist For information about UMaine Extension programs and resources, visit extension.umaine.edu.Find more of our publications and books at extension.umaine.edu/publications/. Lyme disease is an illness caused by bacteria called spirochetes. A tick