Lyme Disease-Infested Ticks Discovered in Three Additional States — Emergency Room Visits Surge 25% This Spring

Deer ticks that transmit Lyme disease have now been identified in Ohio, Indiana, and Illinois, leading to a 25% increase in emergency room visits for tick bites in April 2026 compared to the same month last year, as reported by health tracking data from Medical Daily. The spread of blacklegged tick populations is attributed to milder winter temperatures and more favorable woodland-suburban environments throughout the Midwest. If not diagnosed promptly, Lyme disease can result in significant joint pain, nerve damage, and heart issues. The CDC advises performing tick checks after outdoor activities, ensuring safe removal of ticks immediately, and starting antibiotic treatment if Lyme disease symptoms emerge within 30 days of a tick bite.