Volume 26, Number 7—July 2020
Dispatch
Heartland Virus in Humans and Ticks, Illinois, USA, 2018–2019
Holly C. Tuten1
, Kristen L. Burkhalter1, Kylee R. Noel, Erica J. Hernandez, Seth Yates, Keith Wojnowski, John Hartleb, Samantha Debosik, April Holmes, and Christopher M. Stone
, Kristen L. Burkhalter1, Kylee R. Noel, Erica J. Hernandez, Seth Yates, Keith Wojnowski, John Hartleb, Samantha Debosik, April Holmes, and Christopher M. Stone
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.
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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