Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations

Eastern equine encephalitis virus (EEEV) is a lethal Alphavirus transmitted by Culiseta melanura mosquitoes that primarily cycles between birds. Although rare, infections in humans and horses are associated with high mortality rates and severe neurological effects. Climate change appears to be incre...

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Main Authors: Bhumika Parashar, Rishabha Malviya, Sathvik Belagodu Sridhar, Tarun Wadhwa, Sirajunisa Talath, Javedh Shareef
Format: Article
Language:English
Published: Elsevier 2025-03-01
Series:Infectious Medicine
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Online Access:http://www.sciencedirect.com/science/article/pii/S2772431X25000061
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author Bhumika Parashar
Rishabha Malviya
Sathvik Belagodu Sridhar
Tarun Wadhwa
Sirajunisa Talath
Javedh Shareef
author_facet Bhumika Parashar
Rishabha Malviya
Sathvik Belagodu Sridhar
Tarun Wadhwa
Sirajunisa Talath
Javedh Shareef
author_sort Bhumika Parashar
collection DOAJ
description Eastern equine encephalitis virus (EEEV) is a lethal Alphavirus transmitted by Culiseta melanura mosquitoes that primarily cycles between birds. Although rare, infections in humans and horses are associated with high mortality rates and severe neurological effects. Climate change appears to be increasing the spread of this virus. This study aims to provide a comprehensive analysis of EEEV, including its transmission dynamics, pathogenesis, induced host immune response, and long-term impacts on survivors. It also highlights the virus's unique immune evasion strategies that complicate disease management and contribute to severe clinical outcomes, such as encephalitis with fever, convulsions, and coma. Survivors often face chronic cognitive, motor, and psychosocial impairments. Despite these significant public health risks, gaps remain in understanding the molecular mechanisms underlying immune evasion and the long-term neurological sequelae in survivors. By collating current knowledge, this review underscores the urgent need for the development of targeted vaccines and therapeutic interventions to mitigate the growing threat of EEEV, particularly in the context of climate change-driven geographical expansion.
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issn 2772-431X
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publishDate 2025-03-01
publisher Elsevier
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series Infectious Medicine
spelling doaj-art-d5062709a21c44db90c14ca033d98ac82025-02-12T05:33:08ZengElsevierInfectious Medicine2772-431X2025-03-0141100167Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestationsBhumika Parashar0Rishabha Malviya1Sathvik Belagodu Sridhar2Tarun Wadhwa3Sirajunisa Talath4Javedh Shareef5Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida 201310, Uttar Pradesh, IndiaDepartment of Pharmacy, School of Medical and Allied Sciences, Galgotias University, Greater Noida 201310, Uttar Pradesh, India; Galgotias Multi-Disciplinary Research & Development Cell (G-MRDC), Galgotias University, Greater Noida 201308, Uttar Pradesh, India; Corresponding author.RAK College of Pharmacy, RAK Medical & Health Sciences University, Ras Al Khaimah 11172, United Arab EmiratesRAK College of Pharmacy, RAK Medical & Health Sciences University, Ras Al Khaimah 11172, United Arab EmiratesRAK College of Pharmacy, RAK Medical & Health Sciences University, Ras Al Khaimah 11172, United Arab EmiratesRAK College of Pharmacy, RAK Medical & Health Sciences University, Ras Al Khaimah 11172, United Arab EmiratesEastern equine encephalitis virus (EEEV) is a lethal Alphavirus transmitted by Culiseta melanura mosquitoes that primarily cycles between birds. Although rare, infections in humans and horses are associated with high mortality rates and severe neurological effects. Climate change appears to be increasing the spread of this virus. This study aims to provide a comprehensive analysis of EEEV, including its transmission dynamics, pathogenesis, induced host immune response, and long-term impacts on survivors. It also highlights the virus's unique immune evasion strategies that complicate disease management and contribute to severe clinical outcomes, such as encephalitis with fever, convulsions, and coma. Survivors often face chronic cognitive, motor, and psychosocial impairments. Despite these significant public health risks, gaps remain in understanding the molecular mechanisms underlying immune evasion and the long-term neurological sequelae in survivors. By collating current knowledge, this review underscores the urgent need for the development of targeted vaccines and therapeutic interventions to mitigate the growing threat of EEEV, particularly in the context of climate change-driven geographical expansion.http://www.sciencedirect.com/science/article/pii/S2772431X25000061NeuroinflammationViral pathogenesisAlphavirus transmissionImmune evasionNeurological sequelae
spellingShingle Bhumika Parashar
Rishabha Malviya
Sathvik Belagodu Sridhar
Tarun Wadhwa
Sirajunisa Talath
Javedh Shareef
Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations
Infectious Medicine
Neuroinflammation
Viral pathogenesis
Alphavirus transmission
Immune evasion
Neurological sequelae
title Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations
title_full Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations
title_fullStr Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations
title_full_unstemmed Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations
title_short Eastern equine encephalitis virus: Pathogenesis, immune response, and clinical manifestations
title_sort eastern equine encephalitis virus pathogenesis immune response and clinical manifestations
topic Neuroinflammation
Viral pathogenesis
Alphavirus transmission
Immune evasion
Neurological sequelae
url http://www.sciencedirect.com/science/article/pii/S2772431X25000061
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