Viral Encephalopathy and Retinopathy (VER) in Mediterranean wild and farmed fish species : the experience of the ‘Istituto Zooprofilattico Sperimentale’ in Sicily

Abstract

Betanodavirus infection is widespread in a broad spectrum of fish species worldwide. In Italy, it is responsible for outbreaks of Viral Encephalo-Retinopathy (VER) that causes mortality and economic losses in sea fish farming. The infection is also widespread in the wild and not only in managed systems, where there are generally no observed clinical manifestations.