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 46% of tick tested are infected with at least one pathogen, 33% 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
46% Positive for Infection
Negative (54%)
Ixodes scapularis (deer tick)
24% Positive for Infection
Negative (76%)
Amblyomma americanum (lone star tick)
16% Positive for Infection
Negative (84%)
Dermacentor variabilis (American dog tick)
4% Positive for Infection
Negative (96%)

Coinfection Visualization

4+ Coinfection (3%)
3+ Coinfection (9%)
2+ Coinfection (33%)
No Co-infection (67%)

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 2,867 ticks.
24% Positive
76% Negative

Adult Female Deer Ticks

Sample size of 6,853 ticks.
37% Positive
63% Negative

Infection Rate for Anaplasma phagocytophilum between Adult Female and Nymphal Deer Ticks

Nymphal Deer Ticks

Sample size of 2,544 ticks.
8% Positive
92% Negative

Adult Female Deer Ticks

Sample size of 6,443 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 756 ticks.
50% Positive
50% Negative

Adult Female Lone Star Ticks

Sample size of 260 ticks.
50% Positive
50% Negative

Pathogenic Prevalence in Puerto Rico

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

Unforunately, we have no data for Puerto Rico yet. (A minimum of 25 cases are needed for a pathogen to be displayed here).
Pathogen and co-infected tick prevalence data is © TickCheck, and is derived from our tick testing results and laboratory research.