Where CWD Occurs

Purpose

Chronic Wasting Disease has spread to more than half of the states in the continental United States since it was first identified in wild deer in 1981. CDC and state public health authorities track where cases have occurred. With awareness of where cases are reported, people who live or hunt in those areas can take steps to protect themselves from infected animals.

A mule deer stands in a field in front of some trees.

CWD among free-ranging animals by county

As of March 2024, Chronic Wasting Disease has been reported in 32 states in the United States. Cases have occurred in in all four regions of the country (West, Midwest, South, Northeast). Animals affected include free-ranging deer, elk, reindeer and moose.

In addition, CWD has been reported in reindeer and/or moose in four Canadian provinces, Norway, Finland and Sweden. A small number of cases have also been imported into South Korea. The disease has also been found in farmed deer and elk.

CWD was identified in captive deer in Colorado in the late 1960s and wild deer in 1981. It spread more widely in Colorado and southern Wyoming in the 1990s. CWD has been found in many other areas since 2000. CDC expects the disease to continue to spread in the continental United States.

It is possible that CWD may also occur in other states but cases haven't been detected yet. Once CWD is established in an area, the CWD proteins (prions) stay in the soil and water for years.

Counties (by state)

  1. Lauderdale

  1. Boone
  2. Benton
  3. Carroll
  4. Crawford
  5. Franklin
  6. Independence
  7. Johnson
  8. Logan
  9. Madison
  10. Marion
  11. Newton
  12. Pope
  13. Randolph
  14. Searcy
  15. Sebastian
  16. Scott
  17. Union
  18. Van Buren
  19. Washington

  1. Adams
  2. Boulder
  3. Delta
  4. Douglas
  5. Eagle
  6. El Paso
  7. Garfield
  8. Grand
  9. Jackson
  10. Jefferson
  11. Kit Carson
  12. Larimer
  13. Logan
  14. Mesa
  15. Moffatt
  16. Montrose
  17. Morgan
  18. Park
  19. Phillips
  20. Pueblo
  21. Rio Blanco
  22. Routt
  23. Sedgwick
  24. Summit
  25. Weld
  26. Yuma
  27. Washington

  1. Holmes

  1. Adams
  2. Idaho

  1. Boone
  2. Carroll
  3. Cook
  4. Dekalb
  5. DuPage
  6. Grundy
  7. Jo Daviess
  8. Kane
  9. Kankakee
  10. Kendall
  11. Lake
  12. LaSalle
  13. Lee
  14. Livingston
  15. McHenry
  16. Ogle
  17. Stephenson
  18. Will
  19. Winnebago

  1. Allamakee
  2. Appanoose
  3. Clayton
  4. Decatur
  5. Dubuque
  6. Fayette
  7. Fremont
  8. Greene
  9. Jackson
  10. Jones
  11. Marshall
  12. Wayne
  13. Winneshiek
  14. Woodbury

  1. Cheyenne
  2. Barton
  3. Bourbon
  4. Butler
  5. Cowley
  6. Decatur
  7. Edwards
  8. Ellis
  9. Finney
  10. Ford
  11. Franklin
  12. Graham
  13. Gray
  14. Gove
  15. Hamilton
  16. Haskell
  17. Hodgeman
  18. Jackson
  19. Jewell
  20. Kearny
  21. Kingman
  22. Lane
  23. Logan
  24. Meade
  25. Mitchell
  26. Ness
  27. Norton
  28. Osborne
  29. Pawnee
  30. Pratt
  31. Phillips
  32. Rawlins
  33. Reno
  34. Rooks
  35. Rush
  36. Russell
  37. Scott
  38. Seward
  39. Sheridan
  40. Sherman
  41. Smith
  42. Stafford
  43. Sumner
  44. Thomas
  45. Trego
  46. Wabaunsee
  47. Wallace
  48. Washington
  49. Woodson

  1. Ballard

  1. Tensas

  1. Allegany
  2. Washington

  1. Clinton
  2. Dickinson
  3. Eaton
  4. Gratiot
  5. Ingham
  6. Ionia
  7. Jackson
  8. Kent
  9. Midland
  10. Montcalm
  11. Ogemaw

  1. Beltrami
  2. Crow Wing
  3. Dakota
  4. Fillmore
  5. Houston
  6. Olmsted
  7. Polk
  8. Wabasha
  9. Winona

  1. Alcorn
  2. Benton
  3. Claiborne
  4. DeSoto
  5. Harrison
  6. Issaquena
  7. Lafayette
  8. Marshall
  9. Panola
  10. Pontotoc
  11. Tallahatchie
  12. Tippah
  13. Tishomingo
  14. Warren

  1. Adair
  2. Barry
  3. Cedar
  4. Christian
  5. Cole
  6. Crawford
  7. Franklin
  8. Howell
  9. Jefferson
  10. Linn
  11. Macon
  12. Mercer
  13. Oregon
  14. Perry
  15. Polk
  16. Putnam
  17. Pulaski
  18. Clair
  19. Genevieve
  20. Stone
  21. Taney
  22. Barton
  23. Dallas
  24. Hickory
  25. St. Francois
  26. Sullivan
  27. Washington

  1. Beaverhead
  2. Big Horn
  3. Blaine
  4. Carbon
  5. Custer
  6. Daniels
  7. Fallon
  8. Gallatin
  9. Glacier
  10. Hill
  11. Liberty
  12. Lincoln
  13. Madison
  14. McCone
  15. Park
  16. Phillips
  17. Powder River
  18. Prairie
  19. Rosebud
  20. Sheridan
  21. Treasure
  22. Valley
  23. Yellowstone
  24. Cascade

  1. Arthur
  2. Banner
  3. Boone
  4. Box Butte
  5. Buffalo
  6. Cass
  7. Chase
  8. Cherry
  9. Cheyenne
  10. Custer
  11. Dawes
  12. Deuel
  13. Dundy
  14. Franklin
  15. Frontier
  16. Furnas
  17. Garden
  18. Grant
  19. Hall
  20. Harlan
  21. Hayes
  22. Hitchcock
  23. Holt
  24. Hooker
  25. Howard
  26. Keith
  27. Keya Paha
  28. Kimball
  29. Lincoln
  30. Lancaster
  31. Loup
  32. Morrill
  33. Nance
  34. Phelps
  35. Polk
  36. Red Willow
  37. Saline
  38. Scotts Bluff
  39. Sheridan
  40. Sioux
  41. Thayer
  42. Valley
  43. Webster

  1. Dona Ana
  2. Otero
  3. Socorro

  1. Oneida

  1. Franklin
  2. Johnston
  3. Yadkin

  1. Adams
  2. Bottineau
  3. Grant
  4. Divide
  5. McKenzie
  6. Sioux
  7. Williams

  1. Allen
  2. Hardin
  3. Marion
  4. Wyandot

  1. Texas
  2. Woodward

  1. Blair
  2. Bedford
  3. Cambria
  4. Clearfield
  5. Dauphin
  6. Franklin
  7. Fulton
  8. Huntingdon
  9. Indiana
  10. Jefferson
  11. Juniata
  12. Perry
  13. Snyder
  14. Somerset
  15. Westmoreland

  1. Bennett
  2. Buffalo
  3. Butte
  4. Corson
  5. Custer
  6. Fall River
  7. Haakon
  8. Harding
  9. Jackson
  10. Lawrence
  11. Lyman
  12. Meade
  13. Mellette
  14. Pennington
  15. Perkins
  16. Stanley
  17. Sully
  18. Tripp
  19. Union
  20. Ziebach

  1. Chester
  2. Crockett
  3. Dyer
  4. Fayette
  5. Gibson
  6. Hardeman
  7. Hardin
  8. Haywood
  9. Henry
  10. Lauderdale
  11. Lewis
  12. Madison
  13. McNairy
  14. Shelby
  15. Tipton
  16. Weakley

  1. Bexar
  2. Coleman
  3. Dallam
  4. El Paso
  5. Hartley
  6. Hudspeth
  7. Lubbock
  8. Medina
  9. Val Verde

  1. Carbon
  2. Daggett
  3. Davis
  4. Grand
  5. San Juan
  6. Sanpete
  7. Uintah
  8. Utah
  9. Salt Lake

  1. Carroll
  2. Clarke
  3. Culpepper
  4. Fairfax
  5. Fauquier
  6. Floyd
  7. Frederick
  8. Loudoun
  9. Madison
  10. Montgomery
  11. Rappahannock
  12. Shenandoah
  13. Warren

  1. Berkeley
  2. Hampshire
  3. Hardy
  4. Mineral
  5. Morgan

  1. Adams
  2. Buffalo
  3. Crawford
  4. Columbia
  5. Dane
  6. Dodge
  7. Dunn
  8. Eau Claire
  9. Grant
  10. Green
  11. Green Lake
  12. Fond du Lac
  13. Iowa
  14. Jackson
  15. Jefferson
  16. Juneau
  17. Kenosha
  18. Lafayette
  19. Lincoln
  20. Marathon
  21. Marquette
  22. Milwaukee
  23. Monroe
  24. Oconto
  25. Oneida
  26. Polk
  27. Portage
  28. Racine
  29. Richland
  30. Rock
  31. Sauk
  32. Shawano
  33. Sheboygan
  34. Trempealeau
  35. Vernon
  36. Vilas
  37. Walworth
  38. Washburn
  39. Washington
  40. Waukesha
  41. Waupaca
  42. Winnebago
  43. Wood

  1. Albany
  2. Big Horn
  3. Campbell
  4. Carbon
  5. Converse
  6. Crook
  7. Fremont
  8. Goshen
  9. Hot Springs
  10. Johnson
  11. Laramie
  12. Lincoln
  13. Natrona
  14. Niobrara
  15. Park
  16. Platte
  17. Sheridan
  18. Sublette
  19. Sweetwater
  20. Teton
  21. Washakie
  22. Weston
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Content Source:
National Center for Emerging and Zoonotic Infectious Diseases (NCEZID)