Heterogeneity of West Nile virus genotype 1a in Italy, 2011

Giada Rossini, Fabrizio Carletti, Roberto Rigoli, Sandro Piga, Patrizia Bagnarelli, Paolo Gaibani, Anna Pierro, Alessandro Nanni Costa, Paolo Grossi, Giuseppe Ippolito, Maria Paola Landini, Antonino Di Caro, Maria Rosaria Capobianchi, Vittorio Sambri

Research output: Contribution to journalArticlepeer-review

Abstract

West Nile virus (WNV) is currently circulating in several European countries and, over recent decades, concomitantly with enhanced surveillance studies and improved diagnostic capabilities, an increase in the geographical distribution and in the number of cases in Europe has been documented. In Italy in 2011, 14 human cases of WNV neuroinvasive infections due to lineage 1 strains were registered in several Italian regions. Here we report WNV partial sequences obtained from serum samples of two patients living in different regions of Italy (Veneto and Sardinia). Phylogenetic analysis, performed on a fragment (566 nt) of the envelope gene, showed that WNV strains circulating in Italy in 2011 belong to lineage 1a, but are different from lineage 1a strains isolated in 2008-2009.The data reported here are consistent with the hypothesis of multiple recent introductions of WNV lineage 1a strains into Italy.

Original languageEnglish
Pages (from-to)314-317
Number of pages4
JournalJournal of General Virology
Volume94
Issue numberPART2
DOIs
Publication statusPublished - Feb 1 2013

ASJC Scopus subject areas

  • Virology

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