Vermont Lyme Cases Surge 25% in 2026 Tick Onslaught

MONTPELIER, Vt. — The Vermont Department of Health reported a 25% increase in Lyme disease cases across the state this spring, marking one of the most severe upticks since tracking began, initially covered by VTDigger. As of late April 2026, emergency room visits for tick bites nationwide hit levels not seen since 2017, with Vermont's upper Northeast region identified as ground zero due to warming climates expanding blacklegged deer tick populations. State epidemiologist Dr. Patsy Kelso warned that infections from Borrelia burgdorferi, the Lyme-causing bacterium, are climbing steadily, projecting nearly half a million U.S. cases annually, with Vermont's wooded trails and backyards posing prime threats.

Lyme symptoms — fever, fatigue, headache, muscle aches and the hallmark bull's-eye rash — can emerge days or weeks after a bite, prompting Health Department calls for prompt antibiotic treatment like doxycycline. High-risk areas include Chittenden, Addison and Rutland counties, where leaf litter along Green Mountain trails harbors questing ticks waiting to latch on. Dr. Nicole Baumgarth of Johns Hopkins noted the Northeast's tick explosion ties to climate shifts, urging Vermonters to stick to trails, avoid brushing vegetation and check pets daily.

Prevention remains the frontline defense, with officials recommending EPA-registered repellents, permethrin-treated clothing, daily tick checks and hot showers post-outdoors to dislodge nymphs before they attach. The CDC advises drying potentially exposed clothes on high heat for 10 minutes to kill ticks, while creating tick-free yard zones by mowing grass and clearing brush around homes in Lyme hotspots like Burlington and St. Albans. A Pfizer anti-Lyme vaccine nears potential FDA approval, offering future hope but no shield against other tick-borne ills like Rocky Mountain spotted fever.

Health Commissioner Dr. Mark Levine emphasized Vermont's outdoor lifestyle demands vigilance: 'Enjoy our trails, but don't let ticks ruin your summer.' With cases rising year-over-year, free tick-testing kits are available at healthvermont.gov, and residents spotting rashes or fevers should seek care immediately.