Flesh-Eating Bacteria in Florida: What Beachgoers Need to Know

Quick answer

Is there flesh-eating bacteria in Florida beaches?

Vibrio bacteria naturally live in some warm salt and brackish coastal waters. One species, Vibrio vulnificus, can cause a severe wound or bloodstream infection and is sometimes called “flesh-eating bacteria” in news coverage. The two main exposure routes are an open wound touching coastal water and eating raw or undercooked shellfish.

That does not mean every Florida beach is unsafe. It does mean a normal beach-water badge cannot answer the Vibrio question by itself.

Important testing limit

A “Good” Beach Badge Does Not Test for Vibrio

Safe to Swim Florida summarizes Florida Healthy Beaches samples for enterococcus, an indicator of fecal contamination. Those routine results do not measure Vibrio vulnificus. A good enterococcus reading is useful for the question it answers, but it cannot confirm that Vibrio is absent.

See what Florida tests measure Check current enterococcus results

What “Flesh-Eating Bacteria” Actually Means

“Flesh-eating bacteria” is a dramatic shorthand, not the name of one specific organism. The CDC explains that some Vibrio infections can lead to necrotizing fasciitis, a severe infection in which tissue around an open wound dies. The CDC also notes that group A Streptococcus is the most common cause of necrotizing fasciitis in the United States.

Vibrio vulnificus lives naturally in coastal water; it is not simply a sign of sewage contamination. Numbers tend to be higher during warmer months, and brackish water—where fresh water and salt water mix—can be an important exposure setting.

How People Are Exposed

Who Needs Extra Caution?

Anyone can get a Vibrio infection, but severe complications are more likely for people with certain conditions or treatments. CDC lists liver disease, cancer, diabetes, HIV, thalassemia, immune-suppressing therapy, medicines that reduce stomach acid, and recent stomach surgery among the risk factors.

If you are unsure whether a condition or medicine puts you at higher risk, ask your clinician before a coastal-water or raw-shellfish exposure. A website cannot make that determination for you.

Before You Swim: A 30-Second Vibrio Check

1. Look for any open wound. Include recent cuts, scrapes, piercings, tattoos, and surgery sites—not only large injuries.
2. Stay out if possible. CDC recommends keeping open wounds out of salt and brackish water.
3. Cover unavoidable exposure. Use a waterproof bandage if a wound could touch coastal water or raw seafood.
4. Wash immediately after contact. Clean wounds and cuts thoroughly with soap and clean running water.
5. Avoid floodwater and storm surge. Flooding can mix coastal water, sewage, debris, and sharp objects while increasing wound-exposure risk.
6. Cook shellfish. Do not eat raw or undercooked oysters or other shellfish, especially if you are at increased risk.

Warning Signs After Water Exposure

The Florida Department of Health and CDC list wound-infection signs that include fever, redness, pain, swelling, warmth, discoloration, and discharge. Severe bloodstream infection can include fever, chills, dangerously low blood pressure, and blistering skin lesions.

What About Florida Case Counts in 2026?

Florida DOH publishes its confirmed Vibrio vulnificus case table and labels when the data was updated. Use that official page for the latest published numbers. A statewide or county case count is not a live beach-contamination map, and it should not be used to declare a named beach safe or unsafe.

Safe to Swim Florida does not turn reported human cases into beach badges. Our beach pages answer a different question using routine enterococcus samples, sample dates, and recent-history context.

Use the Right Check for the Right Hazard

Frequently Asked Questions

Official Sources

• Florida Department of Health: Vibrio vulnificus
• CDC: About Vibrio Infection
• CDC: Preventing Vibrio Infection