Our Tick Testing Data

Each tick submitted for testing contributes to the research being conducted here at TickCheck. By keeping records of all the results generated, we have been able to gain valuable insights into disease prevalence and co-infection rates. The comprehensive testing panel has been especially helpful in contributing to this research by ensuring all diseases and coinfections are accounted for when examining a tick. Our current research shows that 76% of tick tested are infected with at least one disease causing organism, 49% are co-infected with two or more, 19% carry three or more, and 9% of the ticks tested carry four or more.

Infection Visualization by Tick Species

All Ticks Tested
76% Positive for Infection
Negative (24%)
Ixodes scapularis (deer tick)
95% Positive for Infection
Negative (5%)
Amblyomma americanum (lone star tick)
63% Positive for Infection
Negative (37%)
Dermacentor variabilis (American dog tick)
48% Positive for Infection
Negative (52%)

Coinfection Visualization

4+ Coinfection (9%)
3+ Coinfection (19%)
2+ Coinfection (49%)
No Co-infection (51%)

Pathogenic Prevalence in Maryland

The bars below show the positive/negative prevalence ratio of selected pathogens we test for. These pathogens were observed in ticks from Maryland. Data set includes tests performed since TickCheck's founding in 2014 and is updated in real time.

Borrelia burgdorferi (deer tick) associated with Lyme disease

Sample size of 104 ticks.
23% Positive
77% Negative

Borrelia burgdorferi (lone star tick) associated with Lyme disease

Sample size of 124 ticks.
10% Positive
90% Negative

Borrelia burgdorferi (American dog tick) associated with Lyme disease

Sample size of 32 ticks. Warning: Low Sample Size
6% Positive
94% Negative

Anaplasma phagocytophilum associated with anaplasmosis

Sample size of 69 ticks.
12% Positive
88% Negative

Babesia microti associated with babesiosis

Sample size of 56 ticks.
0% Positive
100% Negative

Bartonella spp. associated with bartonellosis

Sample size of 29 ticks. Warning: Low Sample Size
48% Positive
52% Negative

Ehrlichia chaffeensis associated with ehrlichiosis

Sample size of 67 ticks.
0% Positive
100% Negative

Rickettsia spp. associated with Rocky Mountain spotted fever

Sample size of 72 ticks.
25% Positive
75% Negative

Francisella tularensis associated with tularemia

Sample size of 80 ticks.
0% Positive
100% Negative

Borrelia miyamotoi associated with B. miyamotoi

Sample size of 58 ticks.
5% Positive
95% Negative

Borrelia lonestari associated with STARI

Sample size of 118 ticks.
19% Positive
81% Negative

Mycoplasma spp. associated with Mycoplasma spp.

Sample size of 45 ticks. Warning: Low Sample Size
4% Positive
96% Negative

Borrelia spp. associated with Borrelia spp.

Sample size of 32 ticks. Warning: Low Sample Size
16% Positive
84% Negative
Pathogen and co-infected tick prevalence data is © TickCheck, and is derived from our tick testing results and laboratory research.