1887

Abstract

The pattern of flavivirus infection in mosquitoes belonging to the genera and collected in two regions of north-eastern Italy (Trentino and Veneto) was assessed. Mosquitoes were collected during 2012 and screened for flaviviruses using a generic reverse transcription-nested-PCR targeted on a region of the non-structural NS5 gene. The phylogenetic analysis was performed on a fragment of ~1000 bp. Virus isolation was attempted in C6/36 insect cell lines and the infected cell cultures were studied by electron microscopy. We detected a wide distribution of flavivirus (AeFV) in , with higher infection prevalence in Trentino than in Veneto. In collected in Veneto, we detected a new sequence of an insect-specific flavivirus and one of Usutu virus. Interestingly, we detected AeFV in , for the first time to our knowledge, in both regions. Viral isolation in cell culture was successful for AeFV. AeFV sequences found in Veneto showed a high percentage of similarity to those detected in Trentino and to those previously reported in other areas of northern Italy. Co-infections with different flaviviruses were not detected.

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2015-02-01
2020-09-25
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