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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 44% of tick tested are infected with at least one pathogen, 32% are co-infected with two or more, 9% carry three or more, and 3% of the ticks tested carry four or more.
Infection Visualization by Tick Species
All Ticks Tested
44% Positive for Infection
Negative (56%)
24% Positive for Infection
Negative (76%)
14% Positive for Infection
Negative (86%)
3% Positive for Infection
Negative (97%)
Coinfection Visualization
4+ Coinfection (3%)
3+ Coinfection (9%)
2+ Coinfection (32%)
No Co-infection (68%)
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 3,141 ticks.
24% Positive
76% Negative
Adult Female Deer Ticks
Sample size of 8,989 ticks.
36% Positive
64% Negative
Infection Rate for Anaplasma phagocytophilum between Adult Female and Nymphal Deer Ticks
Nymphal Deer Ticks
Sample size of 2,818 ticks.
Adult Female Deer Ticks
Sample size of 8,578 ticks.
10% Positive
90% Negative
Infection Rate for Rickettsia amblyommii between Adult Female and Nymphal Lone Star Ticks
Nymphal Lone Star Ticks
Sample size of 877 ticks.
49% Positive
51% Negative
Adult Female Lone Star Ticks
Sample size of 291 ticks.
51% Positive
49% Negative
Pathogenic Prevalence
The bars below show the positive/negative prevalence ratio of selected pathogens we test for.
These pathogens were observed in ticks from the United States and Canada.
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 13,366 ticks.
31% Positive
69% Negative
Borrelia burgdorferi
(western blacklegged tick) associated with Lyme disease
Sample size of 1,255 ticks.
Borrelia burgdorferi
(lone star tick) associated with Lyme disease
Sample size of 5,024 ticks.
Borrelia burgdorferi
(American dog tick) associated with Lyme disease
Sample size of 4,241 ticks.
Anaplasma phagocytophilum
associated with anaplasmosis
Sample size of 17,264 ticks.
Babesia microti
associated with babesiosis
Sample size of 13,189 ticks.
Bartonella spp.
associated with bartonellosis
Sample size of 7,982 ticks.
Ehrlichia chaffeensis
associated with ehrlichiosis
Sample size of 8,862 ticks.
Rickettsia spp.
associated with Rocky Mountain spotted fever
Sample size of 4,170 ticks.
28% Positive
72% Negative
Francisella tularensis
associated with tularemia
Sample size of 5,624 ticks.
0% Positive
100% Negative
Borrelia miyamotoi
associated with B. miyamotoi
Sample size of 9,220 ticks.
Borrelia lonestari
associated with STARI
Sample size of 4,925 ticks.
Babesia spp.
associated with babesiosis
Sample size of 3,659 ticks.
10% Positive
90% Negative
Bartonella henselae
associated with cat-scratch fever
Sample size of 361 ticks.
0% Positive
100% Negative
Mycoplasma spp.
associated with Mycoplasma spp.
Sample size of 5,217 ticks.
Borrelia spp.
associated with Borrelia spp.
Sample size of 3,713 ticks.
25% Positive
75% Negative
Powassan virus General
associated with Powassan virus General
Sample size of 2,705 ticks.
Borrelia mayonii
associated with Lyme disease
Sample size of 4,850 ticks.
0% Positive
100% Negative
Ehrlichia ewingii
associated with ehrlichiosis
Sample size of 2,630 ticks.
Rickettsia amblyommii
associated with Rocky Mountain spotted fever
Sample size of 2,523 ticks.
26% Positive
74% Negative
Babesia duncani
associated with babesiosis
Sample size of 2,575 ticks.
0% Positive
100% Negative
Rickettsia rickettsii
associated with Rocky Mountain spotted fever
Sample size of 7,058 ticks.
Ehrlichia muris-like
associated with ehrlichiosis
Sample size of 2,575 ticks.
Ehrlichia spp.
associated with Ehrlichia spp.
Sample size of 646 ticks.
Anaplasma spp.
associated with Anaplasma spp.
Sample size of 647 ticks.
Babesia odocoilei
associated with Babesia odocoilei
Sample size of 355 ticks.
Ehrlichia canis
associated with Ehrlichia canis
Sample size of 353 ticks.
0% Positive
100% Negative
Panola Mountain Ehrlichia
associated with Panola Mountain Ehrlichia
Sample size of 353 ticks.
0% Positive
100% Negative
Rickettsia montanensis
associated with Rickettsia montanensis
Sample size of 313 ticks.
0% Positive
100% Negative
Anaplasma phagocytophilum - Deer Variant
associated with non-human anaplasmosis
Sample size of 2,587 ticks.
Anaplasma phagocytophilum - Human Active
associated with anaplasmosis
Sample size of 2,587 ticks.
Powassan virus Lineage Ⅱ
associated with Deer Tick Virus
Sample size of 608 ticks.
0% Positive
100% Negative
Powassan virus Lineage Ⅰ
associated with Powassan virus Lineage Ⅰ
Sample size of 608 ticks.
0% Positive
100% Negative
Rickettsia parkeri
associated with Rickettsia parkeri
Sample size of 352 ticks.
0% Positive
100% Negative
Pathogen and co-infected tick prevalence data is © TickCheck, and is derived from our tick testing results and laboratory research.