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Vibrio vulnificus

Florida Department of Health in St. Johns County Environmental Public Health Program

Download the Vibrio Vulnificus Fact Sheet
(PDF, 116KB)

Vibrio vulnificus (Vv) Information:

Vibrio vulnificus is a bacterium that normally lives in warm seawater and is part of a group of vibrios that are called “halophilic” because they require salt. Infection is rare, yet it can be a serious disease caused by bacteria commonly found in warm, brackish and salt water, and in shellfish during the summer months.

  • HOW CAN I GET IT?
  • WHO IS AT RISK?
  • WHAT ARE THE SYMPTOMS?
  • WHAT CAN I DO?
  • Eating raw or undercooked shellfish, particularly oysters.
  • Exposing open wounds, cuts, or scratches of the skin to brackish and salt water.
  • People with weakened immune systems, particularly those with chronic liver disease.
  • Healthy people may develop a mild infection.
  • Symptoms may include: vomiting, diarrhea, abdominal pain or fever.
  • A skin infection may lead to skin breakdown and skin ulcers.
  • The bacteria can invade the bloodstream, causing a severe and life-threatening illness with symptoms like fever, chills, decreased blood pressure (septic shock), and blistering skin lesions.
  • Keep brackish and salt water away from open wounds.
  • Do not eat raw shellfish, and cook shellfish thoroughly before eating.
  • Avoid cross-contaminating ready-to-eat foods with raw shellfish and its juices.

If you have a condition that puts you at risk for Vv, talk to your doctor about how to stay healthy.

For more information on Vibrio Vulnificus health effects, confirmed cases by county, and frequently asked questions please visit the Florida Department of Health – Vibrio Vulnificus webpage.


Report and Contact Information

Human Illness: Call DOH-St. Johns — Epidemiology.

Fish Kills:  Florida Fish and Wildlife Conservation Commission, 1-800-636-0511.