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Erschienen in: Infection 4/2014

01.08.2014 | Clinical and Epidemiological Study

First evidence of simultaneous occurrence of West Nile virus and Usutu virus neuroinvasive disease in humans in Croatia during the 2013 outbreak

verfasst von: T. Vilibic-Cavlek, B. Kaic, L. Barbic, I. Pem-Novosel, V. Slavic-Vrzic, V. Lesnikar, S. Kurecic-Filipovic, A. Babic-Erceg, E. Listes, V. Stevanovic, I. Gjenero-Margan, G. Savini

Erschienen in: Infection | Ausgabe 4/2014

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Abstract

Purpose

We report on first evidence of simultaneous occurrence of West Nile virus (WNV) and Usutu virus (USUV) neuroinvasive infection in humans in Croatia during the transmission season 2013.

Methods

From June to December 2013, a total of 95 patients with clinically suspected WNV infection (WNV fever and neuroinvasive disease) were tested for WNV IgM/IgG antibodies using enzyme-linked immunosorbent assay. Twenty-six reactive samples were further tested by virus neutralization test for confirmation.

Results

WNV neuroinvasive infection was confirmed in 20 patients, while in three patients USUV neutralizing antibodies were detected. Cases occurred during the 11-week interval (from 24 July to 07 October 2013). Both WNV and USUV cases were distributed in three north-western Croatian counties. In addition to human cases, recent asymptomatic WNV infection (detection of IgM antibodies) was recorded in 9/3,460 (0.3 %) tested sentinel horses. Infected animals were recorded in two eastern and one north-western county.

Conclusions

Our results indicate co-circulation of WNV and USUV in Croatia. WNV infection could be misdiagnosed with other emerging infectious diseases presenting with neurological symptoms such as USUV infection.
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Metadaten
Titel
First evidence of simultaneous occurrence of West Nile virus and Usutu virus neuroinvasive disease in humans in Croatia during the 2013 outbreak
verfasst von
T. Vilibic-Cavlek
B. Kaic
L. Barbic
I. Pem-Novosel
V. Slavic-Vrzic
V. Lesnikar
S. Kurecic-Filipovic
A. Babic-Erceg
E. Listes
V. Stevanovic
I. Gjenero-Margan
G. Savini
Publikationsdatum
01.08.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Infection / Ausgabe 4/2014
Print ISSN: 0300-8126
Elektronische ISSN: 1439-0973
DOI
https://doi.org/10.1007/s15010-014-0625-1

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