Research progress on grass carp reovirus

Grass carp（Ctenopharyngodon idellus）is one of the most popular commercial fish species in south China. However，the juvenile grass carp is very easy to attack. Grass carp hemorrhage is one of the most serious diseases of grass carp，causing more than 90% mortality and huge economic loss to the aquaculture industry. Grass carp reovirus （GCRV）is the causative agent of grass carp hemorrhage which is highly contagious and lethal. In recent years，the research on grass carp reovirus has gradually increased. In addition，the new genotype of this virus has been reported and caused extensive concern. This review summarized multiple aspects，such as etiology，molecular biology and immunogenicity of GCRV，for the control of grass carp hemorrhage