Distribution of Chronic Wasting Disease in North America, updated June 08, 2024.
Multimedia
Search here for some of our available field imagery and videos.
Images
![Map of North America showing locations where chronic wasting disease has been detected.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/NA_CWD_2024_06.jpg?itok=aUhi1U7D)
Distribution of Chronic Wasting Disease in North America, updated June 08, 2024.
![Photographs from a Little Brown Bat (Myotis lucifugus) found dead in Montana, USA.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/Fig.%201ABCD_0.jpg?itok=c4Fs1_0V)
Photographs from a Little Brown Bat (Myotis lucifugus) found dead in Montana, USA (A, B, D). (A) Multiple foci of depigmentation (arrowheads) measuring up to 3 mm in diameter are present on the patagia. (B) Under ultraviolet light, there is a single pinpoint focus of orange fluorescence (arrowhead) and multiple pinpoint foci of blue fluorescence (arrow).
Photographs from a Little Brown Bat (Myotis lucifugus) found dead in Montana, USA (A, B, D). (A) Multiple foci of depigmentation (arrowheads) measuring up to 3 mm in diameter are present on the patagia. (B) Under ultraviolet light, there is a single pinpoint focus of orange fluorescence (arrowhead) and multiple pinpoint foci of blue fluorescence (arrow).
![Photomicrographs from little brown bats, one with square-eared anomaly.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/Fig.%202ABCD.jpg?itok=bPpmxtWn)
Photomicrographs from little brown bats, one with square-eared anomaly, found dead in Montana, USA.
linkPhotomicrographs from an unaffected Little Brown Bat (M. lucifugus; A-B) and Little Brown Bat found dead in Montana, USA with the square-eared anomaly (C-E). Periodic Acid Schiff-Hematoxylin. (A) Pinna of an unaffected Little Brown Bat showing the epidermis (e and arrow), dermis (d) and central elastic cartilage plate (c).
Photomicrographs from little brown bats, one with square-eared anomaly, found dead in Montana, USA.
linkPhotomicrographs from an unaffected Little Brown Bat (M. lucifugus; A-B) and Little Brown Bat found dead in Montana, USA with the square-eared anomaly (C-E). Periodic Acid Schiff-Hematoxylin. (A) Pinna of an unaffected Little Brown Bat showing the epidermis (e and arrow), dermis (d) and central elastic cartilage plate (c).
![Intestinal serosa from a Western gull showing Acanthocephaliasis.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/Figure%201_1.jpg?itok=nTDvfmSZ)
Photographs from a Western gull (Larus occidentalis) in California, USA. (A) On the intestinal serosa are multifocal 1-mm diameter firm white nodules (arrows). A white fungal plaque (white arrow) also overlies the serosa.
Photographs from a Western gull (Larus occidentalis) in California, USA. (A) On the intestinal serosa are multifocal 1-mm diameter firm white nodules (arrows). A white fungal plaque (white arrow) also overlies the serosa.
![Photomicrographs of the small intestine from a Western gull showing parasites in intestinal wall.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/Figure%202_2.jpg?itok=lOwJoOwv)
Photomicrographs of the small intestine from a Western gull (Larus occidentalis) from California, USA
linkPhotomicrographs of the small intestine from a Western gull (Larus occidentalis) from California, USA. H & E stain. (A) Expanding the small intestinal lumen and distorting intestinal villi are multiple adult metazoan parasites (arrow); similar parasites are within cavitations in the intestinal wall or serosa (arrowhead).
Photomicrographs of the small intestine from a Western gull (Larus occidentalis) from California, USA
linkPhotomicrographs of the small intestine from a Western gull (Larus occidentalis) from California, USA. H & E stain. (A) Expanding the small intestinal lumen and distorting intestinal villi are multiple adult metazoan parasites (arrow); similar parasites are within cavitations in the intestinal wall or serosa (arrowhead).
![Photos showing discard on raccoon eye, crusty nasal planum, and lesions in airway.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/April%20COM%20panel%20copy.jpg?itok=p8G_Hgff)
Photographs and photomicrographs from a Common Raccoon (Procyon lotor) found dead in Wisconsin, USA. (A) There is green-gray mucoid discharge around the eyes and the nasal planum is crusty (arrows).
Photographs and photomicrographs from a Common Raccoon (Procyon lotor) found dead in Wisconsin, USA. (A) There is green-gray mucoid discharge around the eyes and the nasal planum is crusty (arrows).
Videos
If you are wondering what the Wildlife Health Information Sharing Partnership event reporting system (WHISPers) is and if it can be of help to you, watch this 3-minute video for a short description of the platform's features and benefits.
If you are wondering what the Wildlife Health Information Sharing Partnership event reporting system (WHISPers) is and if it can be of help to you, watch this 3-minute video for a short description of the platform's features and benefits.
The “WHISPers Overview” narrated PowerPoint is an introduction to the features and benefits of the Wildlife Health Information Sharing Partnership-event reporting system (WHISPers), a platform for State, Federal, and Tribal natural resource agency partners to share wildlife health information with each other and the public.
The “WHISPers Overview” narrated PowerPoint is an introduction to the features and benefits of the Wildlife Health Information Sharing Partnership-event reporting system (WHISPers), a platform for State, Federal, and Tribal natural resource agency partners to share wildlife health information with each other and the public.
![UV Screening for Bat White-Nose Syndrome Surveillance](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/video/UV%20screening%20thumbnail.jpg?itok=-qkmNJaI)
Long-wave ultraviolet (UV) light can be used to detect orange fluorescence associated with white-nose syndrome (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome-surveillance) on bat skin.
Long-wave ultraviolet (UV) light can be used to detect orange fluorescence associated with white-nose syndrome (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome-surveillance) on bat skin.
![UV Screening for Bat White-Nose Syndrome Surveillance —Audio-Described](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/video/UV%20screening%20thumbnail_0.jpg?itok=mmS2GDlt)
Long-wave ultraviolet (UV) light can be used to detect orange fluorescence associated with white-nose syndrome (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome-surveillance) on bat skin.
Long-wave ultraviolet (UV) light can be used to detect orange fluorescence associated with white-nose syndrome (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome-surveillance) on bat skin.
![Environmental Sampling for White-Nose Syndrome Surveillance](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/video/environmental%20sampling%20thumbnail.jpg?itok=vWTJ8AuD)
Environmental samples collected in or near bat roosting locations can be used to supplement samples collected from bats for surveillance for white-nose syndrome (WNS) (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome).
Environmental samples collected in or near bat roosting locations can be used to supplement samples collected from bats for surveillance for white-nose syndrome (WNS) (https://www.usgs.gov/centers/nwhc/science/white-nose-syndrome).
![Environmental Sampling for White-Nose Syndrome Surveillance —AD](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/video/environmental%20sampling%20thumbnail_0.jpg?itok=oSzd_U1r)
Audio-described version
Audio
The USGS Ecosystems Mission Area brings you Outstanding in the Field, a series of stories about our science, our adventures, and our efforts to better understand our fish and wildlife and the ecosystems that support them.
The USGS Ecosystems Mission Area brings you Outstanding in the Field, a series of stories about our science, our adventures, and our efforts to better understand our fish and wildlife and the ecosystems that support them.