Molecular Epidemiology of Eastern Equine Encephalitis Virus, New York

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Young, David S. ; Kramer, Laura D. ; Maffei, Joseph G. ; Dusek, Robert J. ; Backenson, P. Bryon ; Mores, Christopher N. ; Bernard, Kristen A. ; Ebel, Gregory D.
• Description:
  Perpetuation, overwintering, and extinction of eastern equine encephalitis virus (EEEV) in northern foci are poorly understood. We therefore sought to describe the molecular epidemiology of EEEV in New York State during current and past epizootics. To determine whether EEEV overwinters, is periodically reintroduced, or both, we sequenced the E2 and partial NSP3 coding regions of 42 EEEV isolates from New York State and the Eastern Seaboard of the United States. Our phylogenetic analyses indicated that derived subclades tended to contain southern strains that had been isolated before genetically similar northern strains, suggesting southern to northern migration of EEEV along the Eastern Seaboard. Strong clustering among strains isolated during epizootics in New York from 2003-2005, as well as from 1974-1975, demonstrates that EEEV has overwintered in this focus. This study provides molecular evidence for the introduction of southern EEEV strains to New York, followed by local amplification, perpetuation, and overwintering.
• Subjects:
  Animals Encephalitis Virus, Eastern Equine Encephalomyelitis, Eastern Equine Genetic Variation Horses Molecular Epidemiology Phylogeny Research
• Source:
  Emerg Infect Dis. 14(3):454-460.
• Document Type:
  Journal Article
• Place as Subject:
  New York
• Location:
  North America
• Volume:
  14
• Issue:
  3
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:b0a229f61fa2ebea1f1b016f3a3afcc5a05b21d05bfc0ece0b6aa3190d563618
• Download URL:
  https://stacks.cdc.gov/view/cdc/16919/cdc_16919_DS1.pdf
• File Type:
  [PDF - 330.87 KB ]