Fish and Wildlife Disease
Fish and Wildlife Disease
Chronic wasting disease and cervid health—2025 highlights
White-Nose Syndrome and Bat Health: 2025 Year in Review
Batrachochytrium salamandrivorans (Bsal) Surveillance
Tackling avian influenza with automated detection for an early warning system
Distribution of CWD Expanding
Chronic Wasting Disease continues to spread across North America
Chronic Wasting Disease continues to spread across North America
What is Avian Influenza (AI)?
USGS is the lead Federal agency for free-ranging wildlife disease research and surveillance. Our capabilities enhance the understanding of wildlife disease ecology and epidemiology as well as inform the development of decision-support and control tools. USGS wildlife disease experts provide technical assistance as needed to manage wildlife disease and conduct cause-of-death investigations.
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Diseases We Study
USGS scientists are at the table with public and animal health agencies as they tackle wildlife diseases including chronic wasting disease, avian influenza, plague, and white-nose syndrome. We are developing advanced tools for disease diagnosis, surveillance, risk assessment and control to support management of wildlife diseases.
Chronic Wasting Disease
Chronic wasting disease (CWD) affects cervids (elk, moose, mule deer, and white-tailed deer) throughout the U.S. CWD affects the nervous system in these animals and creates distinctive brain lesions. At this time, we have no treatment for CWD and it is fatal to the animals who contract it. CWD is caused by an infectious, irregular form of cellular prion protein. CWD can be directly and indirectly...
Fish & Wildlife Disease: Avian Disease
The USGS conducts ongoing surveillance and research nationwide on avian diseases that could be harmful to domestic animals and humans.
Investigating Blotchy Bass Syndrome in Black Basses (Micropterus spp)
USGS is studying the spread and effects of “blotchy bass syndrome” on black basses ( Micropterus spp). USGS and state agencies have partnered with citizen scientists and recreational organizations to create a continent-wide biosurveillance network to monitor the syndrome.
Antibiotic Resistant Bacteria in Migratory Birds
Migratory birds, and particularly those using habitats close to human settlements, may be infected with antibiotic resistant bacteria. The USGS is working with public health professionals to understand the role of birds in the maintenance and dispersal of antibiotic resistant bacteria. Additionally, the USGS is investigating how antibiotic resistant bacteria in birds may relate to public and...
Modeling chronic wasting disease prevalence through time to investigate mechanisms of spread in deer and elk in Wyoming
Diseases are challenging to manage in wild ungulate populations, particularly when there are many ways the disease can spread. Wildlife management agencies often need to take action to control disease spread, but it is unclear which actions are most effective in constraining disease because the importance of different spread mechanisms is not fully understood. This project will aid state wildlife...
AquaDePTH-Aquatic Disease and Pathogen Repository
The Aquatic Disease and Pathogen Repository (AquaDePTH) will be a public-facing national repository to support biosurveillance of aquatic animal diseases and pathogens. By collating historically published data, plus new aquatic pathogen and disease information, stakeholders will be able monitor fish kill and aquatic pathogen trends spatially and temporally in freshwater and marine environments...
WHISPers
WHISPers, the Wildlife Health Information Sharing Partnership - event reporting system, is a web-based repository of basic information on current and historic wildlife mortality (death) and/or morbidity (illness) events reported by partners nationwide. It is also the portal to request diagnostic and epidemiologic services from the USGS National Wildlife Health Center.
Examining PRNP gene frequencies and ‘resistance’ to chronic wasting disease
Multiple studies have demonstrated that various alleles of the cervid prion protein (PRNP) gene affect chronic wasting disease (CWD) progression.
Research to understand SARS-CoV-2 risks for wildlife
Multiple research endeavors at the USGS National Wildlife Health Center are ongoing to help assess the possible impacts of SARS-CoV-2 on wildlife.
Distribution of Highly Pathogenic Avian Influenza in North America, 2021/2022
The first 2021/2022 detection of Eurasian strain (EA) highly pathogenic avian influenza (HPAI) H5N1 in North America occurred in December 2021 in Newfoundland and Labrador, Canada. Subsequently, HPAI EA H5 and EA H5N1 viruses have been confirmed in wild birds, backyard flocks, commercial poultry facilities, and wild mammals in both Canada and the United States. This HPAI distribution map will be...
Epidemiological Services
Professionals at the NWHC include wildlife biologists, veterinarians, statisticians, epidemiologists, and informatics specialists. This multidisciplinary group conducts investigations and disease ecology studies of emerging and recurring priority wildlife diseases, maintains and analyzes comprehensive information on wildlife disease events, and provides response and management consultation and...