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Volume 28, Number 7—July 2022
Research

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

Ana P. Mansilla, Juan M. Grande, and Adrián DiazComments to Author 
Author affiliations: Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina (A. P. Mansilla, J. M. Grande, A. Diaz); Universidad Nacional de La Pampa, Santa Rosa, Argentina (A. P. Mansilla, J. M. Grande); Universidad Nacional de Córdoba, Córdoba, Argentina (A. Diaz)

Main Article

Table 2

Number of positive/total SLEV/WNV samples collected per site, seroprevalence in birds, and environmental and biological variables in study of effect of agroecosystems on seroprevalence of SLEV and WNV in birds, La Pampa, Argentina, 2017–2019*

Site SLEV %, (95% CI) WNV % (95% CI) TC, km2 AA, km2, UD, km WD, km DA† SA‡ CA§
LP1 18/63 28.57 (17.8–41.3) 4/63 6.35 (1.7–15.4) 0.17 6.89 8.95 2.13 56 0 15
LP2 17/100 17 (10.2–25.8) 6/100 6 (2.2–12.6) 0.22 6.83 2.04 2.06 109 50 40
LP3 6/78 7.69 (2.8–15.9) 2/78 2.56 (0.3–8.9) 0.51 6.55 3.25 7.17 115 0 18
LP4 5/107 4.67 (1.5–10.5) 0/107 0 (0–3.4) 0.89 6.17 12.98 3.22 196 0 46
LP5 0/104 0 (0–3.5) 0/104 0 (0–3.5) 0.11 6.95 2.45 0.59 22 120 150
LP6 0/101 0 (0–3.5) 1/101 0.99 (0.02–5.4) 0.47 6.59 7.95 6.31 926 53 520
LP7 1/85 1.17 (0.6.3) 2/85 2.35 (0.2–8.2) 0.36 6.7 5.28 3.45 186 0 255
LP8 0/71 0 (0–5) 0/71 0 (0–5) 0.04 7.02 5.2 0.62 37 5 30
LP9 1/73 1.37 (0.03–7.3) 0/73 0 (0–4.9) 0.48 6.57 0.36 1.34 120 50 27
LP10 1/89 1.12 (0.02–6.1) 0/89 0 (0–4) 0.1 6.96 1.16 0.83 73 20 32
LP11 4/60 6.66 (1.8–16.1) 3/60 5 (1–13.9) 0.03 7.03 9.3 0.05 82 40 27
LP12 7/88 7.95 (3.2–15.7) 3/88 3.41 (0.7–9.6) 0.004 7.06 12.56 0.32 47 30 37

*AA, agricultural area; CA, cowbird abundance; DA, dove abundance; SA, sparrow abundance; SLEV, St. Louis encephalitis virus; TC, tree coverage; UD, distance to the closest urban settlement; WD, distance to the nearest water body; WNV, West Nile virus, †No. eared doves (Zenaida auriculata) + Picui ground doves (Columbina picui) + spot-winged pigeons (Patagioenas maculosa). ‡No. house sparrows (Passer domesticus). §No. grayish baywings (Agelaioides badius) + shiny cowbirds (Molothrus bonariensis).

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Page created: June 01, 2022
Page updated: June 18, 2022
Page reviewed: June 18, 2022
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