Clinical and virological findings in the ongoing outbreak of West Nile virus Livenza strain in northern Italy, July to September 2012

L Barzon; M Pacenti; E Franchin; T Martello; E Lavezzo; L Squarzon; S Toppo; F Fiorin; G Marchiori; G P Scotton; F Russo; M Cattai; R Cusinato; G Palù

doi:10.2807/ese.17.36.20260-en

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Clinical and virological findings in the ongoing outbreak of West Nile virus Livenza strain in northern Italy, July to September 2012
L Barzon^1,2 , M Pacenti² , E Franchin^1,2 , T Martello² , E Lavezzo¹ , L Squarzon¹ , S Toppo¹ , F Fiorin³ , G Marchiori³ , G P Scotton⁴ , F Russo⁵ , M Cattai² , R Cusinato² , G Palù^1,2
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Affiliations: ¹ Department of Molecular Medicine, University of Padova, Padova, Italy ² Regional Reference Laboratory for Infectious Diseases, Microbiology and Virology Unit, Padova University Hospital, Padova, Italy ³ Department of Transfusion Medicine, Venetian Area, Venice, Italy ⁴ Division of Infectious Diseases, Treviso City Hospital, Treviso, Italy ⁵ Department of Public Health and Screening, Veneto Region, Venice, Italy

Correspondence:
G Palù
giorgio.palu unipd.it
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Citation style for this article: Barzon L, Pacenti M, Franchin E, Martello T, Lavezzo E, Squarzon L, Toppo S, Fiorin F, Marchiori G, Scotton G P, Russo F, Cattai M, Cusinato R, Palù G. Clinical and virological findings in the ongoing outbreak of West Nile virus Livenza strain in northern Italy, July to September 2012 . Euro Surveill. 2012;17(36):pii=20260. https://doi.org/10.2807/ese.17.36.20260-en Received: 29 Aug 2012

Abstract

In July-September 2012, one month earlier than in previous years, 13 confirmed human cases of West Nile virus infection were diagnosed in northern Italy, including five with neuroinvasive disease, three with West Nile fever, and five West Nile virus (WNV)-positive blood donors. In nine cases, the presence of the WNV lineage 1a Livenza strain, characterised in 2011, was ascertained. Symptomatic patients had prolonged viruria with high viral load. .