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Tytuł:
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Dose dependence of susceptibility and transmission for an Argentinean West Nile virus strain in local Culex pipiens quinquefasciatus (Diptera: Culicidae).
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Autorzy:
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Giayetto O; Instituto de Investigaciones Biológicas y Tecnológicas - IIBYT, CONICET - Universidad Nacional de Córdoba, Córdoba (X5016GCA), Argentina.; Laboratorio de Arbovirus, Instituto de Virología 'Dr J. M. Vanella', Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba (CP5016), Argentina.
Beranek MD; Instituto de Investigaciones Biológicas y Tecnológicas - IIBYT, CONICET - Universidad Nacional de Córdoba, Córdoba (X5016GCA), Argentina.; Laboratorio de Arbovirus, Instituto de Virología 'Dr J. M. Vanella', Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba (CP5016), Argentina.
Nazar FN; Instituto de Investigaciones Biológicas y Tecnológicas - IIBYT, CONICET - Universidad Nacional de Córdoba, Córdoba (X5016GCA), Argentina.
Diaz A; Instituto de Investigaciones Biológicas y Tecnológicas - IIBYT, CONICET - Universidad Nacional de Córdoba, Córdoba (X5016GCA), Argentina.; Laboratorio de Arbovirus, Instituto de Virología 'Dr J. M. Vanella', Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba (CP5016), Argentina.
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Źródło:
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Transactions of the Royal Society of Tropical Medicine and Hygiene [Trans R Soc Trop Med Hyg] 2021 Sep 03; Vol. 115 (9), pp. 1066-1069.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Publication: 2013- : Oxford : Oxford University Press
Original Publication: 1920- : London : Royal Society of Tropical Medicine and Hygiene
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MeSH Terms:
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Culex*
Culicidae*
West Nile Fever*
West Nile virus*
Animals ; Humans ; Mosquito Vectors
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Contributed Indexing:
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Keywords: Argentina; West Nile virus; mosquitoes; vector competence
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Entry Date(s):
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Date Created: 20210125 Date Completed: 20210930 Latest Revision: 20210930
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Update Code:
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20240105
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DOI:
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10.1093/trstmh/traa185
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PMID:
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33493344
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Background: West Nile virus (WNV) activity has been documented in the central region of Argentina since 2005, but its maintenance network has not been elucidated yet.
Methods: We evaluated the susceptibility to WNV oral infection and transmission in a Culex pipiens quinquefasciatus mosquito population by means of a dose-dependent vector competence assay. Mosquitoes were orally infected with five different viral loads and evaluated for viral infection, dissemination and transmission.
Results: The evaluated population was susceptible to WNV oral infection. Disseminated infections were detected in all the viral doses but transmission was only detected in the higher doses (6 and 7 log10 plaque-forming units/ml). A linear relationship between doses and transmission rates could be established.
Conclusions: A minimum transmission threshold suggests that the Cu. p. quinquefasciatus from Argentina could acquire WNV infection from local urban birds and transmit the virus.
(© The Author(s) 2021. Published by Oxford University Press on behalf of Royal Society of Tropical Medicine and Hygiene.)