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Ecological Dynamics Impacting Bluetongue Virus Transmission in North America.


ABSTRACT: Bluetongue virus (BTV) is an arbovirus transmitted to domestic and wild ruminants by certain species of Culicoides midges. The disease resulting from infection with BTV is economically important and can influence international trade and movement of livestock, the economics of livestock production, and animal welfare. Recent changes in the epidemiology of Culicoides-transmitted viruses, notably the emergence of exotic BTV genotypes in Europe, have demonstrated the devastating economic consequences of BTV epizootics and the complex nature of transmission across host-vector landscapes. Incursions of novel BTV serotypes into historically enzootic countries or regions, including the southeastern United States (US), Israel, Australia, and South America, have also occurred, suggesting diverse pathways for the transmission of these viruses. The abundance of BTV strains and multiple reassortant viruses circulating in Europe and the US in recent years demonstrates considerable genetic diversity of BTV strains and implies a history of reassortment events within the respective regions. While a great deal of emphasis is rightly placed on understanding the epidemiology and emergence of BTV beyond its natural ecosystem, the ecological contexts in which BTV maintains an enzootic cycle may also be of great significance. This review focuses on describing our current knowledge of ecological factors driving BTV transmission in North America. Information presented in this review can help inform future studies that may elucidate factors that are relevant to longstanding and emerging challenges associated with prevention of this disease.

SUBMITTER: Mayo C 

PROVIDER: S-EPMC7212442 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Ecological Dynamics Impacting Bluetongue Virus Transmission in North America.

Mayo Christie C   McDermott Emily E   Kopanke Jennifer J   Stenglein Mark M   Lee Justin J   Mathiason Candace C   Carpenter Molly M   Reed Kirsten K   Perkins T Alex TA  

Frontiers in veterinary science 20200417


Bluetongue virus (BTV) is an arbovirus transmitted to domestic and wild ruminants by certain species of <i>Culicoides</i> midges. The disease resulting from infection with BTV is economically important and can influence international trade and movement of livestock, the economics of livestock production, and animal welfare. Recent changes in the epidemiology of <i>Culicoides</i>-transmitted viruses, notably the emergence of exotic BTV genotypes in Europe, have demonstrated the devastating econom  ...[more]

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