Lyme Disease

Lyme Disease in Horses: Symptoms, Testing, Treatment and What a Positive Test Really Means

November 06, 2026 | Equine Health Horses Lyme Disease Tick-Borne Disease

Lyme exposure is common in horses and Lyme disease is not: 33% of Virginia horses tested at Coggins visits carried antibodies, and most never get sick. The symptoms, what OspA, OspC and OspF mean on a Cornell Multiplex result, antibiotic treatment, tick prevention, the vaccine question, and a horse named...