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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 61% of tick tested are infected with at least one disease causing organism, 39% are co-infected with two or more, 15% carry three or more, and 5% of the ticks tested carry four or more.
Infection Visualization by Tick Species
All Ticks Tested
61% Positive for Infection
Negative (39%)
74% Positive for Infection
Negative (26%)
62% Positive for Infection
Negative (38%)
32% Positive for Infection
Negative (68%)
Coinfection Visualization
4+ Coinfection (5%)
3+ Coinfection (15%)
2+ Coinfection (39%)
No Co-infection (61%)
Pathogenic Prevalence by Species & Life Stage
Generally, nymphal ticks will have fewer pathogen because they've had fewer opportunities to feed. Our data shows this as well.
Infection Rate for Borrelia burgdorferi between Adult Female and Nymphal Deer Ticks
Nymphal Deer Ticks
Sample size of 1,054 ticks.
24% Positive
76% Negative
Adult Female Deer Ticks
Sample size of 2,035 ticks.
37% Positive
63% Negative
Infection Rate for Anaplasma phagocytophilum between Adult Female and Nymphal Deer Ticks
Nymphal Deer Ticks
Sample size of 733 ticks.
10% Positive
90% Negative
Adult Female Deer Ticks
Sample size of 1,627 ticks.
14% Positive
86% Negative
Infection Rate for Rickettsia amblyommii between Adult Female and Nymphal Lone Star Ticks
Nymphal Deer Ticks
Sample size of 237 ticks.
46% Positive
54% Negative
Adult Female Deer Ticks
Sample size of 70 ticks.
51% Positive
49% Negative
Pathogenic Prevalence in Pennsylvania
The bars below show the positive/negative prevalence ratio of selected pathogens we test for.
These pathogens were observed in ticks from Pennsylvania.
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 837 ticks.
34% Positive
66% Negative
Borrelia burgdorferi
(lone star tick) associated with Lyme disease
Sample size of 44 ticks.
Warning: Low Sample Size
16% Positive
84% Negative
Borrelia burgdorferi
(American dog tick) associated with Lyme disease
Sample size of 143 ticks.
Anaplasma phagocytophilum
associated with anaplasmosis
Sample size of 521 ticks.
10% Positive
90% Negative
Babesia microti
associated with babesiosis
Sample size of 471 ticks.
Bartonella spp.
associated with bartonellosis
Sample size of 214 ticks.
40% Positive
60% Negative
Ehrlichia chaffeensis
associated with ehrlichiosis
Sample size of 92 ticks.
Rickettsia spp.
associated with Rocky Mountain spotted fever
Sample size of 109 ticks.
16% Positive
84% Negative
Francisella tularensis
associated with tularemia
Sample size of 89 ticks.
0% Positive
100% Negative
Borrelia miyamotoi
associated with B. miyamotoi
Sample size of 191 ticks.
Borrelia lonestari
associated with STARI
Sample size of 55 ticks.
Babesia spp.
associated with babesiosis
Sample size of 112 ticks.
Mycoplasma spp.
associated with Mycoplasma spp.
Sample size of 141 ticks.
Borrelia spp.
associated with Borrelia spp.
Sample size of 86 ticks.
20% Positive
80% Negative
Powassan virus Lineage II
associated with Deer tick virus
Sample size of 47 ticks.
Warning: Low Sample Size
11% Positive
89% Negative
Borrelia mayonii
associated with Lyme disease
Sample size of 110 ticks.
0% Positive
100% Negative
Ehrlichia ewingii
associated with ehrlichiosis
Sample size of 29 ticks.
Warning: Low Sample Size
0% Positive
100% Negative
Pathogen and co-infected tick prevalence data is © TickCheck, and is derived from our tick testing results and laboratory research.
