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 Diaz
Table 3
SLEV/WNV species-specific seroprevalence in birds collected in different agroecosystems in study of effect of agroecosystems on seroprevalence of SLEV and WNV in birds, La Pampa Province, Argentina, 2017–2019*
| Species | SLEV |
WNV |
|||
|---|---|---|---|---|---|
| No. pos./no. tested | % Positive (95% CI)† | No. pos./no. tested | % Positive (95% CI)† | ||
| House sparrow (Passer domesticus) | 17/237 | 7.17 (4.23–11.23) | 2/237 | 0.84 (0.10–3.01) | |
| Rufous-collared sparrow (Zonotrichia capensis) | 9/181 | 4.97 (2.29–9.23) | 0/181 | 0 (0–2.02) | |
| Rufous hornero (Furnarius rufus) | 6/93 | 6.45 (2.40–13.51) | 7/930 | 7.52 (3.08–14.89) | |
| Picui ground dove (Columbina picui) | 5/100 | 5 (1.64–11.28) | 4/100 | 4 (1.10–9.92) | |
| Grayish baywing (Agelaioides badius) | 2/63 | 3.17 (0.38–11) | 3/63 | 4.76 (0.99–13.29) | |
| Monk parakeet (Myiopsitta monachus) | 2/25 | 8 (0.98–26.03) | 2/25 | 8 (0.98–26.03) | |
| Eared dove (Zenaida auriculata) | 2/26 | 7.69 (0.94–25.13) | 1/26 | 3.84 (0.09–19.63) | |
| Shiny cowbird (Molothrus bonariensis) | 0/72 | 0 (0–4.99) | 1/72 | 1.38 (0.03–7.49) | |
| House wren (Troglodytes aedon) | 6/63 | 9.52 (3.57–19.58) | 0/63 | 0 (0–5.68) | |
| Double-collared seedeater (Sporophila caerulescens) | 1/19 | 5.26 (0.13–26.02) | 0/19 | 0 (0–17.64) | |
| Grassland yellow finch (Sicalis luteola) | 1/20 | 5 (0.12–24.87) | 0/20 | 0 (0–16.84) | |
| Chalk-browed mockingbird (Mimus saturninus) | 1/12 | 8.33 (0.21–38.47) | 0/12 | 0 (0–26.46) | |
| Tropical kingbird (Tyrannus melancholicus)‡ | 2/4 | – | 0/4 | – | |
| American kestrel (Falco sparverius)‡ | 2/4 | – | 0/4 | – | |
| Saffron finch (Sicalis flaveola)‡ | 1/6 | – | 0/6 | – | |
| Pale-breasted spinetail (Synallaxis albescens)‡ | 1/1 | – | 0/1 | – | |
| White-winged black tyrant (Knipolegus aterrimus)‡ | 1/1 | – | 1/1 | – | |
| Hudson´s black tyrant (Knipolegus hudsoni)‡ | 1/1 | – | 0/1 | – | |
| Grassland sparrow (Ammodramus humeralis) | 0/5 | – | 0/5 | – | |
| Firewood-gatherer (Anumbius annumbi) | 0/4 | – | 0/4 | – | |
| Sharp-billed canastero (Asthenes pyrrholeuca) | 0/1 | – | 0/1 | – | |
| Hooded siskin (Spinus magellanicus) | 0/1 | – | 0/1 | – | |
| Buff-winged cinclodes (Cinclodes fuscus) | 0/1 | – | 0/1 | – | |
| Dark-billed cuckoo (Coccyzus melacoryphus) | 0/3 | – | 0/3 | – | |
| Green-barred woodpecker (Colaptes melanochloros) | 0/4 | – | 0/4 | – | |
| Rufous-browed peppershrike (Cyclarhis gujanensis) | 0/1 | – | 0/1 | – | |
| White-crested elaenia (Elaenia albiceps) | 0/1 | – | 0/1 | – | |
| Guira cuckoo (Guira guira) | 0/1 | – | 0/1 | – | |
| Narrow-billed woodcreeper (Lepidocolaptes angustirostris) | 0/3 | – | 0/3 | – | |
| Cattle tyrant (Machetornis rixosa) | 0/4 | – | 0/4 | – | |
| Patagonian mockingbird (Mimus patagonicus) | 0/1 | – | 0/1 | – | |
| White-banded mockingbird (Mimus triurus) | 0/1 | – | 0/1 | – | |
| Screaming cowbird (Molothrus rufoaxillaris) | 0/12 | – | 0/12 | – | |
| Spot-winged pigeon (Patagioenas maculosa) | 0/2 | – | 0/2 | – | |
| Great kiskadee (Pitangus sulphuratus) | 0/27 | – | 0/27 | – | |
| Brown cacholote (Pseudoseisura lophotes) | 0/1 | – | 0/1 | – | |
| Vermilion flycatcher (Pyrocephalus rubinus) | 0/8 | – | 0/8 | – | |
| Roadside hawk (Rupornis magnirostris) | 0/1 | – | 0/1 | – | |
| Golden-billed saltator (Saltator aurantiirostris) | 0/1 | – | 0/1 | – | |
| Greater wagtail-tyrant (Stigmatura budytoides) | 0/1 | – | 0/1 | – | |
| Southern scrub-flycatcher (Sublegatus modestus) | 0/3 | – | 0/3 | – | |
| Sooty-fronted spinetail (Synallaxis frontalis) | 0/2 | – | 0/2 | – | |
| Chaco earthcreeper (Tarphonomus certhioides) | 0/1 | – | 0/1 | – | |
| Blue-crowned parakeet (Thectocercus acuticaudatus) | 0/1 | – | 0/1 | – | |
*Dashes indicate that seroprevalence was not estimated because of the small number of serum samples tested for birds of that species. SLEV, St. Louis encephalitis virus; WNV, West Nile virus. †Prevalence (%) defined as the no. positives divided by total samples multiplied by 100. ‡For seropositive species with <10 birds, seroprevalence was not calculated.
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Page updated: June 18, 2022
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