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

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 exposur...

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Veröffentlicht in:Emerging infectious diseases Jg. 28; H. 7; S. 1393 - 1402
Hauptverfasser: Mansilla, Ana P., Grande, Juan M., Diaz, Adrián
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Atlanta U.S. National Center for Infectious Diseases 01.07.2022
Centers for Disease Control and Prevention
Schlagworte:
Agricultural ecosystems
Agriculture
anthropogenic changes
avian hosts
Birds
Dengue fever
Effect of Agroecosystems on Seroprevalence of St. Louis Encephalitis and West Nile Viruses in Birds, La Pampa, Argentina, 2017–2019
Encephalitis
Environmental aspects
Health aspects
land use
Mosquitoes
Public health
Risk factors
Serology
seroprevalence
Soybeans
St. Louis encephalitis
St. Louis encephalitis virus
Statistics
Urban areas
Vector-borne diseases
Viruses
Water bodies
West Nile fever
West Nile virus
Zoonoses
Argentina
ISSN:1080-6040, 1080-6059, 1080-6059
Online-Zugang:Volltext
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Zusammenfassung: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.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
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ISSN:1080-6040
1080-6059
1080-6059
DOI:10.3201/eid2807.211485