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A habitat suitability analysis for three Culicoides species implicated in bluetongue virus transmission in the Southeastern United States.
Med Vet Entomol
January 2025
Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, Colorado, USA.
Culicoides biting midges adversely impact animal health through transmission of multiple orbiviruses, such as bluetongue virus (BTV). This study used light trapping data collected in the Southeastern United States for three Culicoides midge species that are confirmed or suspected BTV vectors: Culicoides insignis, Culicoides stellifer and Culicoides venustus. Midge presence datasets were combined with meteorological data and ecological data to model habitat suitability for each species.
View Article and Find Full Text PDFEmergence of Bluetongue Virus Serotype 3 in Portugal (2024).
Viruses
November 2024
Virology Laboratory, Nacional Institute of Agrarian and Veterinarian Research, Quinta Do Marquês, Av. da República, 2780-157 Oeiras, Portugal.
Article Synopsis
- Bluetongue virus serotype 3 (BTV-3) was detected in Portugal's Alentejo region in September 2024, first identified in a sheep showing severe symptoms like head swelling and respiratory issues.
- Two cases were confirmed within the same area, leading to high mortality rates in affected livestock.
- In light of the rapid spread of BTV-3, monitoring and vaccination campaigns are underway to protect livestock health and control the virus's transmission.
Challenges of BTV-Group Specific Serology Testing: No One Test Fits All.
Viruses
November 2024
The Commonwealth Scientific and Industrial Research Organisation (CSIRO), Australian Animal Health Laboratory, Australian Centre for Disease Preparedness, 5 Portarlington Road, East Geelong, VIC 3219, Australia.
A newly formatted enzyme-linked immunosorbent assay (ELISA) for the detection of antibodies to bluetongue virus (BTV) was developed and validated for bovine and ovine sera and plasma. Validation of the new sandwich ELISA (sELISA) was achieved with 949 negative bovine and ovine sera from BTV endemic and non-endemic areas of Australia and 752 BTV positive (field and experimental) sera verified by VNT and/or PCR. The test diagnostic sensitivity (DSe) and diagnostic specificity (DSp) were 99.
View Article and Find Full Text PDF[Advances in the anti-host interferon immune response of bluetongue virus].
Sheng Wu Gong Cheng Xue Bao
December 2024
College of Veterinary Medicine, Southwest University, Chongqing 402460, China.
Bluetongue virus (BTV) usually infects sheep, cattle, deer and other domesticated and wild ruminants through the bite of the vector insects, , causing bluetongue (BT). BT in subtropical and even temperate regions poses a serious threat to the development and international trade of the livestock industry. This article introduced the structure and cellular invasion, and summarized the mechanisms of anti-BTV immune response of host cells and antagonism of host cell innate immune response by the non-structural proteins (e.
View Article and Find Full Text PDFHEMATOLOGY AND BIOCHEMICAL REFERENCE INTERVALS AND SEROPREVALENCE OF HEMORRHAGIC DISEASES FOR FREE-RANGING MULE DEER () IN WEST TEXAS.
J Zoo Wildl Med
December 2024
Texas Parks and Wildlife Department, Austin, Texas, 78744 USA.
Wildlife species are routinely captured for translocation, general health monitoring, and research-based pursuits to guide wildlife management. Mule deer () were captured for various research projects and management actions in the Trans-Pecos and Panhandle regions of Texas from 2015 to 2019. The objective of this study was to develop hematologic and biochemical parameters for free-ranging mule deer in Texas and to develop a health monitoring system for current and future mule deer population management.
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