Last updated: October 23, 2026. Case counts below come from official state health departments and the CDC, reported October 21–22, 2026. This guide is for information only — always follow your doctor's advice for diagnosis and treatment.

Medical disclaimer — please read. This article is for general health information only and is not medical advice, diagnosis or treatment. Flesh-eating bacteria (Vibrio vulnificus) can become life-threatening within hours. Seek emergency medical care immediately if warning signs appear — do not try to treat this at home.

Flesh-Eating Bacteria Symptoms 2026: US South Outbreak & Home Care Guide

At least 13 people have died in a 2026 flesh-eating bacteria outbreak spreading across the US South — Florida, Louisiana, South Carolina, Alabama, Mississippi, North Carolina and Texas. Health officials warn the bacteria, Vibrio vulnificus, can turn deadly within a day or two. Here are the symptoms to watch for, who is most at risk, and how to stay safe.

The outbreak: what happened

• Florida — 31 cases, 5 deaths: Florida's Vibrio vulnificus reports reached 31 cases and five deaths, according to the Florida Department of Health update ending October 17, 2026. The latest case was a 65–69-year-old in Hillsborough County (Sarasota Herald-Tribune, October 22).
• Louisiana — 21 cases, 7 deaths: Louisiana reported 21 cases and seven deaths as of October 21, the hardest-hit state in this outbreak.
• More states affected: South Carolina health officials confirmed one related death, and at least 24 more cases have been reported across Alabama, Mississippi, North Carolina and Texas.
• A worse-than-usual season: Florida reported 33 cases and five deaths for all of 2025 — the 2026 season has already matched the death toll with months still ahead.
• Why it is climbing: Infections are most common from May through October, when coastal water temperatures are warmest. The bacteria thrives in brackish water where seawater and freshwater mix.

What is flesh-eating bacteria?

The name covers infections caused by Vibrio vulnificus, a bacterium that earned the nickname because it can cause necrotizing fasciitis — a severe infection that rapidly destroys skin and muscle tissue, according to the CDC.

It is the same family of bacteria behind most vibriosis illness: the CDC says about 80,000 people contract vibriosis every year in the US, and about 52,000 of those come from contaminated food. Most infections are mild — but Vibrio vulnificus is the dangerous outlier: about 1 in 5 people who develop the infection die, sometimes within a day or two of becoming ill.

Flesh-eating bacteria symptoms to watch for

Symptoms depend on how the infection entered the body:

• Stomach illness — watery diarrhea with stomach cramping, nausea, vomiting and fever (usually after eating raw or undercooked seafood)
• Bloodstream infection — fever, chills, dangerously low blood pressure, and blistering skin lesions
• Wound infection — fever, redness, pain, swelling, warmth, discoloration and discharge around a cut or scrape; the infection can spread to the rest of the body
• Necrotizing fasciitis signs — rapidly spreading redness or purple/black patches of skin, severe pain out of proportion to the wound, fever

Vibrio infection can be confirmed with laboratory tests and is treated with antibiotics — many patients need intensive care, and in extreme cases surgeons must remove dead tissue or amputate a limb to stop the spread.

How do you catch it?

• Eating raw or undercooked shellfish — particularly oysters. About 52,000 US vibriosis cases a year come from contaminated food.
• Open wounds in brackish water — cuts, scrapes, fresh tattoos and piercings, or healing surgical incisions exposed to seawater, bays, estuaries, river mouths or flood-prone areas.
• Handling raw seafood — the bacteria can enter through small cuts on the hands during preparation.

Anyone can become infected, but people with healthy immune systems usually fight it off without noticing. The highest risk groups:

• Liver disease, cancer, diabetes, HIV or thalassemia
• People taking immune-suppressing medications or acid-reducing drugs
• People who recently had stomach surgery
• Older adults with multiple underlying health issues

How to protect yourself

• Cook seafood thoroughly — especially oysters; raw seafood is the biggest food risk
• Keep raw seafood away from ready-to-eat food and wash hands and surfaces after handling it
• Stay out of brackish water with open wounds — or cover them with waterproof bandages and wash exposed skin with soap and running water immediately afterwards
• Wear gloves if you are at higher risk and handle raw seafood
• Cover fresh tattoos, piercings and healing surgical incisions before going near coastal or flood water

Home care during recovery

Hospital treatment comes first for serious Vibrio infection — but recovery continues at home. If your doctor advises home care after treatment:

• Watch the wound daily — new redness, swelling, warmth, discoloration or discharge needs a doctor's review the same day
• Track temperature and blood pressure — fever after discharge can signal the infection is returning
• Take antibiotics exactly as prescribed — finish the full course even if you feel better
• Change dressings as your doctor advises — keep the wound clean and dry; wash hands before and after
• Hydrate and rest — water, oral rehydration salts and clear broths; do not rush back to activity
• Protect the healing wound — stay out of seawater and brackish water until the skin has fully closed

Frequently Asked Questions

What are the symptoms of flesh-eating bacteria (Vibrio vulnificus)?

Flesh-eating bacteria (Vibrio vulnificus) symptoms include watery diarrhea with stomach cramping, nausea, vomiting and fever; bloodstream infection with fever, chills, dangerously low blood pressure and blistering skin lesions; or wound infection with fever, redness, pain, swelling, warmth, discoloration and discharge. Seek emergency care immediately if these follow raw seafood or brackish-water exposure.

How do you catch Vibrio vulnificus?

Most people catch Vibrio vulnificus by eating raw or undercooked shellfish, especially oysters. It can also enter through open cuts, scrapes, fresh tattoos, piercings or surgical incisions exposed to brackish water where seawater and freshwater mix.

Who is most at risk from flesh-eating bacteria?

People with liver disease, cancer, diabetes, HIV or thalassemia, people on immune-suppressing medications or acid-reducing drugs, people who recently had stomach surgery, and older adults with multiple health issues face the highest risk of severe Vibrio vulnificus illness.

How can I avoid flesh-eating bacteria?

Cook seafood, especially oysters, thoroughly; keep raw seafood away from ready-to-eat food and wash hands and surfaces after handling it; stay out of brackish water if you have open wounds, or cover them with waterproof bandages and wash exposed skin with soap and running water afterwards.

How can home nursing help after a Vibrio infection?

After hospital treatment for Vibrio infection, a home nurse can monitor the wound daily for redness, swelling or discharge, track temperature and blood pressure, help with medications and wound dressings as the doctor advises, and spot warning signs of complications early. WhatsApp +92 308 3688218 to arrange a certified nurse.