Nodavirus (VNN)

🦠 Nervous necrosis virus (NNV)

📋 Overview

NNV attacks the central nervous system of larval and juvenile fish. Vertical transmission from broodstock is the main introduction route. Global emergence has crippled marine aquaculture in Southeast Asia and the Mediterranean.

📊 Key Facts

Causative Agent

Nervous necrosis virus (NNV)

Peak Mortality

100%

Primary Host

Grouper, sea bass, striped jack, halibut

Treatment

✗ None

Vaccine

✓ Available