West Nile Virus Infection of Birds, Mexico

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Guerrero-Sánchez, Sergio ; Cuevas-Romero, Sandra ; Nemeth, Nicole M. ; Trujillo-Olivera, María Teresa Jesús ; Worwa, Gabriella ; Dupuis, Alan ; Brault, Aaron C. ; Kramer, Laura D. ; Komar, Nicholas ; Estrada-Franco, José Guillermo
• Description:
  West Nile virus (WNV) has caused disease in humans, equids, and birds at lower frequency in Mexico than in the United States. We hypothesized that the seemingly reduced virulence in Mexico was caused by attenuation of the Tabasco strain from southeastern Mexico, resulting in lower viremia than that caused by the Tecate strain from the more northern location of Baja California. During 2006-2008, we tested this hypothesis in candidate avian amplifying hosts: domestic chickens, rock pigeons, house sparrows, great-tailed grackles, and clay-colored thrushes. Only great-tailed grackles and house sparrows were competent amplifying hosts for both strains, and deaths occurred in each species. Tecate strain viremia levels were higher for thrushes. Both strains produced low-level viremia in pigeons and chickens. Our results suggest that certain avian hosts within Mexico are competent for efficient amplification of both northern and southern WNV strains and that both strains likely contribute to bird deaths.
• Subjects:
  Animals Bird Diseases Birds Communicable Diseases, Emerging Disease Reservoirs Humans Passeriformes Viremia Virulence Virus Shedding West Nile Fever

  More +
• Source:
  Emerg Infect Dis. 17(12):2245-2252.
• Document Type:
  Journal Article
• Funding:
  N01-AI25489/AI/NIAID NIH HHS/United States
• Place as Subject:
  Mexico
• Volume:
  17
• Issue:
  12
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:4817e2b4e3cf97027ab8d7ee2b8f495c8074e8448ecbfcc5bfe202c373d38d3e
• Download URL:
  https://stacks.cdc.gov/view/cdc/23764/cdc_23764_DS1.pdf
• File Type:
  [PDF - 386.67 KB ]