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Expanding Usutu virus circulation in Italy: detection in the Lazio region, central Italy, 2017 to 2018
- Fabrizio Carletti1 , Francesca Colavita1 , Francesca Rovida2 , Elena Percivalle2 , Fausto Baldanti2,3 , Ida Ricci4 , Claudio De Liberato4 , Francesca Rosone4 , Francesco Messina1 , Eleonora Lalle1 , Licia Bordi1 , Francesco Vairo5 , Maria Rosaria Capobianchi1 , Giuseppe Ippolito6 , Giuseppina Cappiello7 , Alberto Spanò7 , Silvia Meschi1 , Concetta Castilletti1
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View Affiliations Hide AffiliationsAffiliations: 1 Laboratory of Virology, National Institute for Infectious Diseases ‘Lazzaro Spallanzani’ IRCCS, Rome, Italy 2 Molecular Virology Unit, Microbiology and Virology Department, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy 3 Department of Clinical, Surgical, Diagnostic and Pediatric Sciences, University of Pavia, Italy 4 Istituto Zooprofilattico Sperimentale delle regioni Lazio e Toscana, Rome, Italy 5 Regional Service for Surveillance and Control of Infectious Diseases (SERESMI)-Lazio Region, National Institute for Infectious Diseases ‘Lazzaro Spallanzani’ IRCCS, Rome, Italy 6 Scientific Direction, National Institute for Infectious Diseases ‘Lazzaro Spallanzani’ IRCCS, Rome, Italy 7 Unit of Microbiology, Sandro Pertini Hospital, Rome, ItalySilvia Meschisilvia.meschi inmi.it
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Citation style for this article: Carletti Fabrizio, Colavita Francesca, Rovida Francesca, Percivalle Elena, Baldanti Fausto, Ricci Ida, De Liberato Claudio, Rosone Francesca, Messina Francesco, Lalle Eleonora, Bordi Licia, Vairo Francesco, Capobianchi Maria Rosaria, Ippolito Giuseppe, Cappiello Giuseppina, Spanò Alberto, Meschi Silvia, Castilletti Concetta. Expanding Usutu virus circulation in Italy: detection in the Lazio region, central Italy, 2017 to 2018. Euro Surveill. 2019;24(3):pii=1800649. https://doi.org/10.2807/1560-7917.ES.2019.24.3.1800649 Received: 03 Dec 2018; Accepted: 16 Jan 2019
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Abstract
Blood donation screening for West Nile virus (WNV) was mandatory in the Lazio region in 2017 and 2018 (June-November) according to the national surveillance plan. In these years, all five donations reactive in WNV nucleic acid amplification tests harboured instead Usutu virus (USUV). Clade ‘Europe 2’ was identified in four blood donations and a 2018 mosquito pool. The cocirculation of WNV and USUV in Lazio warrants increased laboratory support and awareness of possible virus misidentification.
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