Increased virulence of Italian infectious hematopoietic necrosis virus (IHNV) associated with the emergence of new strains.

ABSTRACT: Infectious hematopoietic necrosis virus (IHNV) is the causative agent of IHN triggering a systemic syndrome in salmonid fish. Although IHNV has always been associated with low levels of mortality in Italian trout farming industries, in the last years trout farmers have experienced severe disease outbreaks. However, the observed increasing virulence of IHNV is still based on empirical evidence due to the poor and often confounding information from the field. Virulence characterization of a selection of sixteen Italian isolates was performed through in vivo challenge of juvenile rainbow trout to confirm field evidence. The virulence of each strain was firstly described in terms of cumulative mortality and survival probability estimated by Kaplan-Meier curves. Furthermore, parametric s

SUBMITTER: Abbadi M 

PROVIDER: S-EPMC8570149 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature