The Ohio Department of Health has published a 2026 update to its Lyme Disease Awareness materials aimed at healthcare providers. The document, titled Lyme Disease Awareness: 2026 Updates for Healthcare Providers, appeared on the state agency's .gov portal and refreshes the standing clinical guidance the department issues for tick-borne illness.

The full text of the Ohio release was not included in materials available to The Vet Scope. The title alone signals intent: carry the state's Lyme provider guidance into 2026, the calendar year in which tick activity in the Midwest typically resumes by mid-March.

Why this matters in a veterinary clinic

Human Lyme surveillance and canine Lyme surveillance share the same exposure map. The blacklegged tick, Ixodes scapularis, drives both. A county-level increase in human cases typically mirrors trends practitioners see in the canine caseload, especially from May through October.

The American College of Veterinary Internal Medicine consensus on canine Lyme borreliosis, published in 2018, remains the reference document for clinical decision-making in dogs. It emphasizes four pillars: vaccination in endemic regions, year-round acaricide use, serologic screening at annual wellness visits, and prompt treatment of clinical cases with doxycycline.

The Ohio update does not change those pillars. What it changes: the backdrop a veterinarian sees when a client walks in carrying a recent human diagnosis.

What state-level updates typically revise

State health departments issue Lyme provider updates to align with changes from the CDC and the Advisory Committee on Immunization Practices. The typical payload includes:

• Revised case definition language
• Updated endemic-county maps
• Two-tier serology testing algorithms
• Treatment guidance
• Post-exposure prophylaxis recommendations
• Reporting forms and timeframes

Ohio recorded its first locally acquired Lyme case in 2010, per state health department records. State maps now show established I. scapularis populations across more than half of Ohio's counties.

The diagnostic toolkit remains stable

Canine practice continues to rely on serology. In-clinic SNAP tests from IDEXX, Zoetis, and Abaxis deliver results in roughly 8 to 15 minutes. Western blot at reference laboratories (IDEXX, ANTECH) confirms positives. PCR on synovial fluid or tick tissue supports research and referral work.

Vaccination in endemic regions remains a year-round conversation. The USDA licenses multiple Borrelia burgdorferi bacterin products and reviews labels on a rolling basis. No 2026 label change has appeared in the materials available.

Public health crossover

Lyme disease remains the most commonly reported vector-borne illness in the United States. The CDC's standing estimate of roughly 476,000 Americans diagnosed and treated each year has held across multiple annual reports and frames preventive strategy on both sides of the exam table.

Forward-looking note: tick ranges continue to shift under changing climate conditions, and state-level Lyme guidance will keep its relevance for veterinary clinics across the Midwest. The Ohio Department of Health's 2026 update is available on the state agency's provider portal.