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Volume 26, Number 7—July 2020
Dispatch

Heartland Virus in Humans and Ticks, Illinois, USA, 2018–2019

Holly C. Tuten1Comments to Author , Kristen L. Burkhalter1, Kylee R. Noel, Erica J. Hernandez, Seth Yates, Keith Wojnowski, John Hartleb, Samantha Debosik, April Holmes, and Christopher M. Stone
Author affiliations: University of Illinois at Urbana-Champaign, Champaign, Illinois, USA (H.C. Tuten, K.R. Noel, E.J. Hernandez, S. Yates, C.M. Stone); Centers for Disease Control and Prevention, Fort Collins, Colorado, USA (K.L. Burkhalter); Kankakee County Health Department, Kankakee, Illinois, USA (K. Wojnowski); US Fish & Wildlife Service, Marion, Illinois, USA (J. Hartleb); Illinois Department of Public Health, Springfield, Illinois, USA (S. Debosik, A. Holmes)

Main Article

Table 1

Collection methods and number of ticks of each species and life stage collected in 2 counties, Illinois, USA, 2019

Site, method, tick species Stage Sex No. collected Density/1,000 m2
Site 1* 659
Dragging
Amblyomma americanum Adult F 93 26
Adult M 90 25
Nymph Not applicable 338 93
Dermacentor variabilis Adult F 15 4
Adult M 10 3
Carbon-dioxide trap
A. americanum Adult F 18 Not applicable
Adult M 17 Not applicable
Nymph Not applicable 75 Not applicable
D. variabilis Adult F 1 Not applicable
Adult M 1 Not applicable
Ixodes scapularis
 Nymph
 Not applicable
 1
 Not applicable
Site 2† 498
Dragging
A. americanum Adult F 32 15
Adult M 44 21
Nymph Not applicable 159 76
D. variabilis Adult F 1 0.5
Adult M 2 1
Carbon-dioxide trap
A. americanum Adult F 118 Not applicable
Adult M 88 Not applicable
Nymph Not applicable 48 Not applicable
D. variabilis
 Adult F 3 Not applicable
Adult
 M
 3
 Not applicable
Site 3‡ 9
Carbon-dioxide trap
A. americanum Adult F 4 Not applicable
Nymph Not applicable 4 Not applicable
D. variabilis Adult F 1 Not applicable

*Site 1, Kankakee County, visited June 21 and 25, 2019; dragging, n = 24 × 150 m transects; carbon dioxide traps, n = 3.
†Site 2, Williamson County, visited July 11–12, 2019; dragging, n = 14 × 150 m transects; carbon dioxide traps, n = 9.
‡Site 3, Williamson County, visited July 11–12, 2019; no dragging performed because of site size; carbon dioxide trap, n = 2.

Main Article

1These authors contributed equally to this article.

Page created: May 01, 2020
Page updated: June 18, 2020
Page reviewed: June 18, 2020
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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