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Volume 32, Number 9—September 2026

Research Letter

Powassan Virus in Ixodes scapularis Tick Populations, Illinois, USA, 2025

Aurora Marguccio, Lance E. Jones, Brian Wilm, Arif Ciloglu, Valeria Trivellone, Millon Blackshear, Tomas Rodriguez, April Holmes, Samantha Kerr, Chang-Hyun Kim, and Chris M. StoneComments to Author 
Author affiliation: Prairie Research Institute, University of Illinois Urbana-Champaign, Champaign, Illinois, USA (A. Marguccio, L.E. Jones, B. Wilm, A. Ciloglu, V. Trivellone, M. Blackshear, T. Rodriguez, C.-H. Kim, C.M. Stone); Faculty of Veterinary Medicine, Erciyes University, Kayseri, Türkiye (A. Ciloglu); Illinois Department of Public Health, Springfield, Illinois, USA (A. Holmes, S. Kerr)

Main Article

Figure 1

Geographic information from study of Powassan virus (POWV) in Ixodes scapularis tick populations, Illinois, USA, 2025. Green shading shows counties in Illinois where I. scapularis tick active surveillance included POWV testing. Orange triangles indicate locations where POWV-positive ticks were detected. Asterisk indicates county in which a human case was reported in 2025 (placed at random location within the county).

Figure 1. Geographic information from study of Powassan virus (POWV) in Ixodes scapularis tick populations, Illinois, USA, 2025. Green shading shows counties in Illinois where I. scapularis tick active surveillance included POWV testing. Orange triangles indicate locations where POWV-positive ticks were detected. Asterisk indicates county in which a human case was reported in 2025 (placed at random location within the county).

Main Article

Page created: July 21, 2026
Page updated: August 17, 2026
Page reviewed: August 17, 2026
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