Missouri's tick-borne disease profile is shaped by its tick species mix. The state has three significant disease-transmitting species — the lone star tick, the American dog tick, and the blacklegged (deer) tick — and each carries different diseases with different transmission dynamics and risk windows.
Missouri's Three Disease-Carrying Ticks
The lone star tick (Amblyomma americanum) is the most abundant and aggressive biting tick in Missouri. The adult female is identified by a single white spot on the back. Lone star ticks are present in all life stages from spring through fall and actively seek hosts rather than waiting passively. They transmit ehrlichiosis and STARI (Southern Tick-Associated Rash Illness) and are implicated in the alpha-gal syndrome that causes mammalian meat allergy in some bite victims.
The American dog tick (Dermacentor variabilis) is Missouri's primary vector for Rocky Mountain Spotted Fever — a bacterial illness that can be fatal if not treated promptly with antibiotics. Despite its name, RMSF cases occur throughout Missouri. The dog tick is most active in spring and early summer and is commonly encountered on dogs, deer, and in tall grass and shrubby vegetation at forest edges.
The blacklegged tick (Ixodes scapularis) is the Lyme disease vector in Missouri. While Missouri's Lyme disease rates are lower than northeastern states, the blacklegged tick is present throughout the state, particularly in wooded areas. Lyme transmission requires the tick to remain attached for 36–48 hours, making prompt tick removal critical for prevention.
Yard Tick Reduction Programs
Professional barrier spray programs applied to the lawn perimeter and brush edges where ticks concentrate can reduce the tick population in the managed area by 80–90% through the season. D&D Pest Control offers tick management programs for rural Missouri and Franklin County properties — visit ddpestcontrolmo.com.