INFORMATION AND RESULTS

Reported Species Distribution Maps

The four maps below show where the main vector tick species (blacklegged tick, Lone star tick, American dog tick, or Gulf Coast tick) has been reported within Illinois. This means that at least one tick of that species has been found in the county on or prior to December 31, 2018 (it does not necessarily mean that species is established and reproducing in the county).

Counties with reports of Lone star and Gulf coast ticks. Click on the image to see it enlarged.

Counties with reports of American dog and blacklegged ticks. Click on image to see it enlarged.

2019 Results (as of July 26, 2019)

  • I-TICK Kits (Passive Surveillance)
    • The second year is off to a great start! Participation in the I-TICK program is growing with 51 public hubs, and 24 private hubs.
    • I-TICK has launched its social media campaign on May 24, 2019. We are now reaching the public through Facebook, Instagram, and Twitter. As of June 5, 2019 our social media presence has reached over 800 people in the first two weeks.
    • Tick species and life stage identification is complete for I-TICK kits returned to us by July 9, 2019.

Table 1: Summary of species and life stage for 2019 I-TICK Hub Collections (as of August, 2019)

Species  Adult Nymph Larva* Total
Amblyomma americanum
(Lone Star)
123 62 Not Available 185
Amblyomma maculatum (Gulf Coast) 1 0 Not Available 1
Dermacentor variabilis (American Dog) 148 0 Not Available 148
Ixodes Scapularis (Deer/Blacklegged) 5 0 Not Available 5
Grand Total 277 62 Not Available 339

*Larva numbers are estimated

Please click on the image for full sized view. A map showing the counties where passive surveillance tick data has been gathered through I-TICK kits in 2019.

  • I-TICK Tick Dragging (Active Surveillance)
    • As part of our active surveillance, I-TICK conducts bi-weekly tick dragging in two counties and once a month “blitzes” in southern Illinois. Specific county health departments may also conduct their own active tick dragging surveillance and submit their findings to I-TICK.

Table 2: Summary of species and life stage for 2019 I-TICK Active Surveillance (as of December 31, 2019)

I-TICK Researchers are carrying out tick dragging in Douglas and Moultrie counties. The status of I. scapularis is unknown in these counties. Through our active surveillance we hope to determined what ticks are established or present in these two counties. Our southern Illinois “blitzes” take place in Hamilton, Jackson, Jefferson, Perry, Pope, and Williamson counties once a month. St. Clair County Health Department conducted their own tick dragging and submitted ticks found to I-TICK.

Species  Adult Nymph Larva* Total
Amblyomma americanum
(Lone Star)
106 367 346 819
Amblyomma maculatum (Gulf Coast) 1 0 Not Available 1
Dermacentor variabilis (American Dog) 223 1 Not Available 224
Ixodes scapularis (Deer/Blacklegged) 5 8 Not Available 13
Grand Total 335 376 346 1057

2018 Results (as of December 31st, 2018)

  • I-TICK Kits (Passive Surveillance)
    • The first year was overwhelmingly successful: 70 individual participants and 18 Hubs collected over 900 ticks in 28 counties.
    • Tick species and life stage identification is complete for 2018 (Table 1)

Table 1: Summary of species and life stage for 2018 I-TICK Hub Collections

Species  Adult Nymph Larva* Total
Amblyomma americanum
(Lone Star)
150 137 284 571
Amblyomma maculatum (Gulf Coast) 5 0 0 5
Dermacentor variabilis (American Dog) 307 0 0 307
Ixodes scapularis (Blacklegged) 12 6 0 18
Grand Total 474 143 284 901

*Larva numbers are estimated

2018 I Tick Data Summary

Please click on the image for full-sized version.