Epizootic Hemorrhagic Disease Virus: Current Knowledge and Emerging Perspectives

Area of Science:

• Veterinary Virology
• Epidemiology of Infectious Diseases
• Animal Health and Welfare

Background:

• Epizootic Hemorrhagic Disease (EHD) is a significant viral disease affecting ruminants, causing substantial economic and welfare losses.
• Epizootic Hemorrhagic Disease Virus (EHDV), an Orbivirus, is responsible for widespread outbreaks in livestock and wildlife across multiple continents.
• Recent EHDV outbreaks in the Mediterranean and the European Union highlight its expanding threat, exacerbated by climate change-driven vector distribution.

Purpose of the Study:

• To provide a comprehensive overview of current knowledge regarding EHDV.
• To examine the changing distribution and virulence of EHDV.
• To discuss animal models and potential control strategies for EHDV.

Main Methods:

• Literature review of existing studies on EHDV.
• Analysis of epidemiological data on EHDV outbreaks and distribution.
• Examination of research on animal models and therapeutic interventions for EHDV.

Main Results:

• EHDV outbreaks are increasing in frequency and geographic range, particularly in the Mediterranean basin and the EU.
• Global climate change is facilitating the expansion of competent Culicoides midge vectors.
• Diverse animal models have been used to study EHDV pathogenesis and host responses.

Conclusions:

• EHDV poses a serious and expanding risk to global livestock and wild ruminant populations.
• Understanding EHDV distribution, virulence, and host-pathogen interactions is crucial for effective disease management.
• Further research into novel treatments and control measures is necessary to mitigate the impact of EHDV.