期刊
EMERGING INFECTIOUS DISEASES
卷 28, 期 7, 页码 1393-1402出版社
CENTERS DISEASE CONTROL & PREVENTION
DOI: 10.3201/eid2807.211485
关键词
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资金
- Ministerio Nacional de Ciencia y Tecnologia de Argentina [PICT 2016-3283, PICT 2018-1172]
- Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET-PUE IIBYT 2017)
- Secretaria de Ciencia y Tecnologia-Universidad Nacional de Cordoba (SECyT-UNC)
- Consejo Nacional de Investigaciones Cientificas y Tecnicas
This study used generalized linear mixed models to analyze the impact of agroecosystems in the Pampa ecoregion of Argentina on the exposure of free-ranging birds to SLEV and WNV. The results showed that agricultural area was the most important factor affecting SLEV seroprevalence.
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.
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