Effect of Agroecosystems on Seroprevalence of St. Louis Encephalitis and West Nile Viruses in Birds, La Pampa, Argentina, 2017–2019

Details

• Alternative Title:
  Emerg Infect Dis
• Personal Author:
  Mansilla, Ana P. ; Grande, Juan M. ; Diaz, Adrián
• Description:
  In Argentina, the Pampa ecoregion has been almost completely transformed into agroecosystems. To evaluate the environmental (agricultural area, tree coverage, distance to the nearest water body and urban site) and biological (dove, cowbird, and sparrow abundance) effects on free-ranging bird exposure to St. Louis encephalitis virus (SLEV) and West Nile virus (WNV), we used generalized linear mixed models. For 1,019 birds sampled during 2017-2019, neutralizing antibodies were found against SLEV in samples from 60 (5.8%) birds and against WNV for 21 (2.1%). The best variable for explaining SLEV seroprevalence was agricultural area, which had a positive effect; however, for WNV, no model was conclusive. Our results suggest that agroecosystems in the La Pampa ecoregion increase the exposure of avian hosts to SLEV, thus potentially increasing virus activity.
• Subjects:
  Animals Bird Diseases Birds Encephalitis, St. Louis Encephalitis Virus, St. Louis Seroepidemiologic Studies West Nile Fever
• Source:
  Emerg Infect Dis. 2022; 28(7):1393-1402
• Pubmed ID:
  35731160
• Pubmed Central ID:
  PMC9239869
• Document Type:
  Journal Article
• Place as Subject:
  Argentina
• Volume:
  28
• Issue:
  7
• Collection(s):
  Emerging Infectious Diseases
• Main Document Checksum:
  urn:sha256:bd0396a5f0bba7685a88b56cde5129822ef595bdc3edf0e6c8bcb49be47f83a6
• Download URL:
  https://stacks.cdc.gov/view/cdc/118902/cdc_118902_DS1.pdf
• File Type:
  [PDF - 1.46 MB ]