Journal
VIRUSES-BASEL
Volume 13, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/v13081586
Keywords
chronic wasting disease; transmissible spongiform encephalopathy; transmission; cervid; prion; risk analysis
Categories
Funding
- Minnesota Board of Animal Health [146769]
Ask authors/readers for more resources
This study conducted a qualitative risk assessment for CWD transmission to cervid farms based on current scientific understanding and knowledge of farmed cervid operations. The majority of CWD-positive farmed cervid operations in Minnesota and Wisconsin were found to have high transmission risks, but there were also cases with moderate or negligible transmission risks, indicating the need for further investigation to inform effective control measures.
CWD (chronic wasting disease) has emerged as one of the most important diseases of cervids and continues to adversely affect farmed and wild cervid populations, despite control and preventive measures. This study aims to use the current scientific understanding of CWD transmission and knowledge of farmed cervid operations to conduct a qualitative risk assessment for CWD transmission to cervid farms and, applying this risk assessment, systematically describe the CWD transmission risks experienced by CWD-positive farmed cervid operations in Minnesota and Wisconsin. A systematic review of literature related to CWD transmission informed our criteria to stratify CWD transmission risks to cervid operations into high-risk low uncertainty, moderate-risk high uncertainty, and negligible-risk low uncertainty categories. Case data from 34 CWD-positive farmed cervid operations in Minnesota and Wisconsin from 2002 to January 2019 were categorized by transmission risks exposure and evaluated for trends. The majority of case farms recorded high transmission risks (56%), which were likely sources of CWD, but many (44%) had only moderate or negligible transmission risks, including most of the herds (62%) detected since 2012. The presence of CWD-positive cervid farms with only moderate or low CWD transmission risks necessitates further investigation of these risks to inform effective control measures.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available