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Increased Attack Rates and Decreased Incubation Periods in Raccoons with Chronic Wasting Disease Passaged through Meadow Voles

Journal Article · · Emerging Infectious Diseases
 [1];  [2];  [2];  [2];  [3]
  1. US Dept. of Agriculture (USDA), Ames, IA (United States); OSTI
  2. US Geological Survey, Madison, WI (United States)
  3. US Dept. of Agriculture (USDA), Ames, IA (United States)
Chronic wasting disease (CWD) is a naturally-occurring neurodegenerative disease of cervids. Raccoons (Procyon lotor) and meadow voles (Microtus pennsylvanicus) have previously been shown to be susceptible to the CWD agent. To investigate the potential for transmission of the agent of CWD from white-tailed deer to voles and subsequently to raccoons, we intracranially inoculated raccoons with brain homogenate from a CWD-affected white-tailed deer (CWDWtd) or derivatives of this isolate after it had been passaged through voles 1 or 5 times. We found that passage of the CWDWtd isolate through voles led to a change in the biologic behavior of the CWD agent, including increased attack rates and decreased incubation periods in raccoons. A better understanding of the dynamics of cross-species transmission of CWD prions can provide insights into how these infectious proteins evolve in new hosts.
Research Organization:
Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN (United States)
Sponsoring Organization:
US Department of Agriculture; USDOE Office of Science (SC)
Grant/Contract Number:
SC0014664
OSTI ID:
1905056
Journal Information:
Emerging Infectious Diseases, Journal Name: Emerging Infectious Diseases Journal Issue: 4 Vol. 28; ISSN 1080-6040
Publisher:
Centers for Disease Control and Prevention (CDC)Copyright Statement
Country of Publication:
United States
Language:
English

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