Illinois CWD TSE Prion Update, detected in Putnam, Marshall, Adams, and Peoria counties

Illinois CWD TSE Prion Update, detected in Putnam, Marshall, Adams, and Peoria counties

Illinois, Chronic wasting disease, CWD, detected in Putnam, Marshall, Adams, and Peoria counties

Chronic wasting disease detected in four additional Illinois counties

Press Release - Friday, April 11, 2025

PRINT EMAIL Putnam, Marshall, Adams and Peoria counties added to state's CWD list

SPRINGFIELD - Chronic wasting disease, or CWD, has been detected in Putnam, Marshall, Adams, and Peoria counties, expanding the geographic presence of the disease in free-ranging deer populations in northern Illinois, the Illinois Department of Natural Resources announced today.

Adams County is the first documented case recorded outside of the leading edge of the CWD endemic region.

CWD is an always-fatal neurological disease that affects the long-term health of white-tailed deer in Illinois. First documented in Illinois in 2002 near Roscoe, CWD has been detected in 25 counties across northern Illinois and now as far south as Adams County in west-central Illinois.

In early February 2025, CWD was detected and confirmed through diagnostic testing in Putnam, Marshall, and Adams counties from routine surveillance of hunter-harvested deer. Peoria County was confirmed in a 2-year-old deer exhibiting clinical signs consistent with CWD infection using the same diagnostic testing procedures. Following standard protocol, samples from Adams County underwent genetic testing to ensure genetic matches between submitted tissue samples and source deer.

Affected Illinois counties now include Adams, Boone, Bureau, Carroll, Cook, DeKalb, DuPage, Ford, Grundy, Jo Daviess, Kane, Kankakee, Kendall, Lake, LaSalle, Lee, Livingston, Marshall, McHenry, Ogle, Peoria, Putnam, Stephenson, Will, and Winnebago.

CWD management is important to the overall health of Illinois' deer herd. A primary goal of ongoing CWD management in Illinois includes lowering prevalence in affected areas to slow the spread of the disease. Those management efforts have kept prevalence low in the state for almost an entire generation of deer hunters.

"Illinois is a national leader in managing and slowing the spread of CWD, and over the past two decades IDNR's program has served as a model for other states," said IDNR Director Natalie Phelps Finnie.

While the World Health Organization and the Centers for Disease Control and Prevention have not linked CWD to human transmission, they recommend against eating meat from CWD-positive deer. Hunters are encouraged to have their deer tested and avoid consuming brain, spinal cord, eyes, and other tissues known to harbor the CWD agent.

Go online for additional information about CWD management in Illinois, including updates made to the program in 2024. For more information about these detections or about CWD, contact Chris Jacques, wildlife disease program manager, at chris.jacques@illinois.gov.

IDNR wildlife biologists will be available to discuss current management strategies and answer questions about CWD in public meetings anticipated to occur later this year. Meeting dates and locations will be released at a later date. Landowners, hunters, and interested citizens are encouraged to attend.

CWD Illinois

https://dnr.illinois.gov/programs/cwd.html

https://dnr.illinois.gov/press-release.31147.html

Illinois Chronic Wasting Disease: 2023-2024 Surveillance and Management Report (Project Period: 1 July 2023 - 30 June 2024)

Chris Jacques and Patrick McDonald

Wildlife Disease Program, Illinois Department of Natural Resources 15 September 2024

Executive Summary

First CWD positive: A suspect adult female deer from northwest Boone County was diagnosed with CWD in November 2002.

Total samples through 30 June 2024: 173,486

Total positives through 30 June 2024: 2,188

Total Number of counties affected through 30 June 2024: 21 (Boone, Bureau, Carroll, Cook, DeKalb, DuPage, Ford, Grundy, Jo Daviess, Kane, Kankakee, Kendall, Lake, LaSalle, Lee, Livingston, McHenry, Ogle, Stephenson, Will, Winnebago).

General distribution through 30 June 2024: Total affected area (determined by a minimum convex polygon that includes all positives) is now 11,135 mi2. The number of CWD-positive (CWD+) deer detected increased ~18% in FY2024 (Table 1) continues to reflect geographic expansion and increasing CWD prevalence within the endemic area of northern Illinois, as depicted by detection of disease in 2 new counties. Prevalence among adult male deer (8.9%), adult female deer (5.0%), and across all sex and age classes of adult deer (7.2%) during FY2024 were 11-65% higher than the previous 2 years; Figure 7). Increasing trends in prevalence were noted in 11 of 20 counties; prevalence remained unchanged in 6 counties, sampling intensity was insufficient in 1 county for estimating annual prevalence, and disease was first detected in 2 new counties (Bureau, Ford) during FY2024. The highest annual CWD prevalence rates on record in the endemic area where ongoing long-term surveillance (5+ years) continues to include Boone, Grundy, Kendall, LaSalle, McHenry, and Stephenson counties (Figure 9). Despite maintaining low annual rates of CWD increase (0.08% per year since 2003) throughout the endemic area prior to 2019, prevalence rates have increased 4.5-fold from 1.6% in 2019 to 7.2% in 2023. Increasing prevalence over the past 4 years is clearly indicative of shifting disease dynamics, and notably the continual accumulation of prions in the environment and increasing probabilities of infection of free-ranging deer across northern Illinois. It remains unclear to what extent the continued temporal and spatial increases in CWD infection will affect deer within the endemic area or other counties where the disease is not known to occur. Nevertheless, prompt development and implementation of alternative management approaches are necessary to slow the geographic expansion of CWD across Illinois. Otherwise, quantitative analyses of data derived over the next 5 years will be used to assess whether CWD management should focus solely on increasing surveillance and providing hunter testing services across the state.

Snip…see full page;

https://v3-wp.huntillinois.org/wp-content/uploads/2024/09/2023-2024CWDAnnualSummary.pdf

Total samples through 30 June 2023: 162,099

Total positives through 30 June 2023: 1,752

https://dnr.illinois.gov/content/dam/soi/en/web/dnr/programs/cwd/documents/cwdannualreport2022-2023.pdf

https://dnr.illinois.gov/programs/cwd.html

Illinois Chronic Wasting Disease (CWD): 2020-2021 Surveillance and Management Report (Project Period: July 1, 2020 - June 30, 2021) Doug Dufford and Patrick McDonald Wildlife Disease Program, Illinois Department of Natural Resources September 16, 2021

Total positives through June 30, 2021: 1,165

https://www2.illinois.gov/dnr/hunting/Documents/2020-2021CWDAnnualSummary.pdf

IDNR announces 2022 chronic wasting disease sampling locations for deer hunters

NEWS PROVIDED BY

Illinois Department of Natural Resources

https://www.einnews.com/pr_news/598166596/idnr-announces-2022-chronic-wasting-disease-sampling-locations-for-deer-hunters

see;

https://www2.illinois.gov/dnr/programs/CWD/Documents/2019-2020%20CWD%20Annual%20Summary.pdf

https://www2.illinois.gov/dnr/programs/CWD/Pages/default.aspx

12 September 2022

Executive Summary

First CWD positive: A suspect adult female deer from northwest Boone County was diagnosed with CWD in November 2002.

Total samples through 30 June 2022: 150,970

Total positives through 30 June 2022: 1,383

Number of counties affected through 30 June 2022: 19 (Boone, Carroll, Cook, DeKalb, DuPage, Grundy, Jo Daviess, Kane, Kankakee, Kendall, Lake, LaSalle, Lee, Livingston, McHenry, Ogle, Stephenson, Will, Winnebago).

General distribution through 30 June 2022: Total affected area (determined by a minimum convex polygon that includes all positives) is now 9,796 mi2 . The number of CWD-positive (CWD+) deer detected increased ~34% in FY2022 (Table 1) and was likely attributable to higher numbers of deer sampled (n=9,896) than during FY2021 (n=8,377). Prevalence among adult female deer increased during FY2022, though overall prevalence across all age and sex classes of adult deer (4.5%) remained relatively unchanged from the previous year (4.4%; Figure 7). Increasing trends in prevalence were noted in 10 of 19 counties; decreasing prevalence was noted in 5 counties and sampling intensity in 4 counties was insufficient for estimating annual prevalence. In counties where long-term surveillance (5+ years) has occurred, 6 counties (i.e., Boone, Grundy, Kendall, LaSalle, McHenry, Stephenson) continue to maintain the highest annual prevalence rates on record (Figure 9). Prior to 2019, annual prevalence rates in CWD counties remained low and increased minimally (0.08% per year since 2003). However, a 2-3-fold increase in prevalence from 1.6% in 2019 to 3.1% and 4.4% in 2020 and 2021, respectively, are notable departures from the long-term rates of increase in disease infection across northern Illinois. Prevalence of infection during 2022 was 4.5%. It remains uncertain whether recent increases in prevalence reflect changes in disease dynamics and shifting temporal or spatial patterns of CWD across northern Illinois, though increasing prevalence in recent years remains a cause for concern.

https://www2.illinois.gov/dnr/programs/CWD/Documents/CWD_Annual_Report_2021-2022.pdf

Illinois Chronic Wasting Disease CWD TSE Prion Update Total positives through 30 June 2022 1,383 Cases confirmed

Illinois Chronic Wasting Disease: 2021-2022 Surveillance and Management Report (Project Period: 1 July 2021 - 30 June 2022)

Chris Jacques, Doug Dufford and Patrick McDonald Wildlife Disease Program, Illinois Department of Natural Resources 12 September 2022

Total positives through 30 June 2022: 1,383

Illinois Chronic Wasting Disease: 2021-2022 Surveillance and Management Report (Project Period: 1 July 2021 - 30 June 2022) ' Chris Jacques, Doug Dufford and Patrick McDonald Wildlife Disease Program, Illinois Department of Natural Resources'''

2020 - Illinois, to date, has detected 1002 cases of CWD TSE Prion...tss

Illinois Chronic Wasting Disease (CWD): 2019-2020 Surveillance and Management Report (Project Period: July 1, 2019 - June 30, 2020)

Doug Dufford and Patrick McDonald

Wildlife Disease Program, Illinois Department of Natural Resources

September 28, 2020

Executive Summary

Table 1. Number of CWD positive deer by fiscal year (July 1 through June 30).

TOTAL 1002

SEE CHART;

snip...

Total 14 51 31 51 42 38 30 37 42 36 36 59 71 72 75 51 90 176 1002

SNIP...SEE FULL REPORT;

Illinois Chronic Wasting Disease (CWD): 2019-2020 Surveillance and Management Report (Project Period: July 1, 2019 - June 30, 2020)

https://www2.illinois.gov/dnr/programs/CWD/Documents/2019-2020%20CWD%20Annual%20Summary.pdf

https://dnr.illinois.gov/programs/cwd/cwd-county-statistics.html

Illinois Department of Agriculture Cervid

https://agr.illinois.gov/animals/animalhealth/captive-cervid.html

https://agr.illinois.gov/content/dam/soi/en/web/agr/animals/animalhealth/documents/permitrequestform.pdf

WEDNESDAY, DECEMBER 14, 2022

Illinois CWD Conflicting Report of Total Cases, 1,165 Total Cases vs 1,383 Total Cases, To Date, take your pick?

https://chronic-wasting-disease.blogspot.com/2022/12/illinois-cwd-conflicting-report-of.html

FRIDAY, NOVEMBER 26, 2021

Illinois Chronic Wasting Disease (CWD): 2020-2021 Surveillance and Management Report (Project Period: July 1, 2020 - June 30, 2021) 1,165 cases confirmed to date

https://chronic-wasting-disease.blogspot.com/2021/11/illinois-chronic-wasting-disease-cwd.html

SUNDAY, DECEMBER 22, 2019

Illinois CWD TSE Prion 90 CWD-positive deer with 826 confirmed positive Total positives through June 30, 2019

https://chronic-wasting-disease.blogspot.com/2019/12/illinois-cwd-tse-prion-90-cwd-positive.html

FRIDAY, NOVEMBER 16, 2018

Illinois CWD in FY2018 Fifty-one CWD-positive deer were identified from 8,665 usable WT deer samples collected statewide

https://chronic-wasting-disease.blogspot.com/2018/11/illinois-cwd-in-fy2018-fifty-one-cwd.html

WEDNESDAY, JANUARY 24, 2018

Illinois Chronic Wasting Disease CWD TSE Prion cases mounting with 75 confirmed 2017 and 685 total to date

http://chronic-wasting-disease.blogspot.com/2018/01/illinois-chronic-wasting-disease-cwd.html

TUESDAY, FEBRUARY 02, 2016

Illinois six out of 19 deer samples tested positive for CWD in the Oswego zone of Kendall County

http://chronic-wasting-disease.blogspot.com/2016/02/illinois-six-out-of-19-deer-samples.html

Monday, August 31, 2015

Illinois Loosing Ground to Chronic Wasting Disease CWD cases mounting with 71 confirmed in 2015 and 538 confirmed cases to date

http://chronic-wasting-disease.blogspot.com/2015/08/illinois-loosing-ground-to-chronic.html

SATURDAY, FEBRUARY 08, 2014

Illinois CWD confirmed in Will County deer

http://chronic-wasting-disease.blogspot.com/2014/02/illinois-cwd-confirmed-in-will-county.html

Illinois Update July 1, 2013: We now have a total of 408 cases of CWD.

Note: Years are reported by fiscal year: 2013 is the period from July 1, 2012 through June 30, 2013, etc.

http://www.dnr.illinois.gov/Programs/CWD/Pages/default.aspx

Illinois CWD Infected

Sections - August 15, 2013

http://www.dnr.illinois.gov/programs/CWD/Documents/CWDMap.pdf

MONDAY, APRIL 08, 2013

Evaluation of a wild white-tailed deer population management program for controlling chronic wasting disease in Illinois, 2003–2008

http://chronic-wasting-disease.blogspot.com/2013/04/evaluation-of-wild-white-tailed-deer.html

Wednesday, January 16, 2013

Illinois DuPage county deer found with Chronic Wasting Disease CWD

http://chronic-wasting-disease.blogspot.com/2013/01/illinois-dupage-county-deer-found-with.html

Tuesday, November 13, 2012

ILLINOIS CWD UPDATE NOVEMBER 2012

http://chronic-wasting-disease.blogspot.com/2012/11/illinois-cwd-update-november-2012.html

Thursday, February 10, 2011 CWD ILLINOIS UPDATE FEBRUARY 2011 Locations of CWD-Positive Deer - Updated 2/07/2011

http://chronic-wasting-disease.blogspot.com/2011/02/cwd-illinois-update-february-2011.html

Thursday, January 28, 2010

CWD ILLINOIS UPDATE 2010

http://chronic-wasting-disease.blogspot.com/2010/01/cwd-illinois-update-2010.html

Saturday, March 08, 2008

CWD UPDATE ILLINOIS Stephenson County joins CWD list

http://chronic-wasting-disease.blogspot.com/2008/03/cwd-update-illinois-stephenson-county.html

THURSDAY, APRIL 10, 2025 

CWD TSE Prion, Politics, Friendly Fire, Unforeseen Consequences, What If? 

https://chronic-wasting-disease.blogspot.com/2025/04/cwd-tse-prion-politics-friendly-fire.html

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