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Diseases Treated


Norvax® Strep Si is a monovalent vaccine containing an inactivated strain of Streptococcus iniae. The vaccine induces protective immunity in warmwater fish of both marine and freshwater environments against streptococcosis caused by Streptococcus iniae.

  • The first monovalent immersion and injection vaccine against Streptococcus iniae

  • Proven high and long-lasting protection

  • Safe for the fish, the vaccinator and the consumer

  • Benefits sustainable and environmentally friendly aquaculture

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This website contains information on veterinary pharmaceutical and biological products based on international registration dossiers. The site may refer to products that are either not available in your country or are marketed under a different tradename. In addition, the safety and efficacy data and the withholding periods for a specific product may be different depending on local regulations. Please consult your veterinarian for further information.

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