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Viral Hemorrhagic Septicemia

Other Names: Egtved Disease, Infectious Nephrotic Swelling and Liver Degeneration, Abdominal Ascites of Trout, Infectious Anemia of Trout, Pernicious Anemia of Trout
Viral hemorrhagic septicemia (VHS) is a serious systemic disease of fish.

Disease Agents

  • Novirhabdovirus

Additional Disease Specific Resources


VHS Prevention Practices
Provides specific prevention recommendations for aquaculture operations to prevent the introduction and spread of VHS.
[Prevention Practices]

VHS Prevention Practices Checklist
Assessment checklist for your aquaculture operation.
[Prevention Practices Checklist]

VHS Response Package
This "response package" was developed to aid fish producers in preventing the introduction and spread of VHS to aquaculture facilities.
[Response Package]

Web Resource

Focus on Fish Health
This web site is part of an education and outreach campaign for viral hemorrhagic septicemia (VHS) prevention funded by the U.S. Department of Agriculture Animal and Plant Health Inspection Service (USDA APHIS). It is part of a collaborative effort to help boaters, anglers, aquaculture producers and bait fish dealers understand the serious nature of VHS and to encourage them to use prevention measures.

Disease Categories

The links in this section will take you to a list of other diseases for that same category (e.g. diseases affecting that species, in a specific region, etc.).

Species Affected


Agent Type


To cite the factsheets found on this website, the following information can be used:
Spickler, Anna Rovid. "Title of Factsheet." "Date of Factsheet (Last Updated)."