Eastern Equine Encephalitis Virus Taxonomy, Genomics, and Evolution.

The research article provides a comprehensive understanding of the Eastern equine encephalitis virus (EEEV), with information on its taxonomy, genomics, and evolution, and discusses how the virus’s genetic diversity impacts infection spread and disease manifestation.

EEEV Taxonomy

• The study delves into the classification of the Eastern equine encephalitis virus. EEEV is a sub-family of the Togaviridae virus family and falls under Alphavirus genus.

EEEV Genomics and Function

• The paper presents a review of the functional genomics of EEEV, giving insights into the structure of the virus and how it operates at a molecular or genetic level.

EEEV Evolution and Diversity

• This review explores the evolution of EEEV and how it has developed and spread over the years. The study posits that the EEEV genetic diversity plays a significant role in its transmission and the severity of the diseases it causes.

EEEV Role in Enzootic Cycle

• EEEV is primarily an arthropod-borne virus (arbovirus) maintained in an enzootic cycle—a cycle between a pathogen and a host, in this case, between the Culiseta melanura and passerine birds. This mechanism aids in its survival and transmission across host organisms.

EEEV and Disease Severity

• The study highlights that EEEV is responsible for the highest reported case-fatality rate among arboviruses in the Americas and is responsible for sporadic outbreaks in the Eastern and Midwest United States.
• The infection caused by EEEV can lead to severe neurologic disease and death in horses, humans, and other vertebrate hosts.