WEST PALM BEACH, Fla. (CBS12) — A surge in infections from the rare and deadly flesh-eating bacteria Vibrio vulnificus has claimed five lives in Florida this year, as cases have soared to 20 in just a matter of weeks, with one now in Martin County, as confirmed by the Florida Department of Health (FDOH).
FDOH reported that, so far in 2025, there have been twenty reported cases of infections caused by the bacteria.
Just over a month ago, CBS12 News reported that there were 11 confirmed cases of the infection with four deaths linked to the bacteria, showing a spike in just one month.
According to the Centers for Disease Control and Prevention (CDC), most infections begin with the consumption of raw or undercooked shellfish, especially oysters.
Additionally, the CDC noted that open wounds can become infected if exposed to salt or brackish water that contains the bacteria.
The CDC also highlighted concerns over extreme weather events like coastal floods, hurricanes, and storm surges. Such conditions can push coastal waters inland, increasing the risk of Vibrio infections for people—especially older adults or those with underlying health issues—who may come into contact with contaminated water.
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Vibrio vulnificus is typically found in warm, salty waters like the Gulf of Mexico and nearby bays, per officials. The FDOH warns that higher concentrations of this bacterium occur when water temperatures rise.
FDOH said that while infections from Vibrio vulnificus are rare, they can lead to severe health complications. Symptoms can include diarrhea, stomach cramping, nausea, vomiting, fever, and chills. The infections can be treated with antibiotics, but in serious cases, surgery may be necessary to remove damaged tissue.
Rapid diagnosis is critical for effective treatment and recovery, and those with strong immune systems are at low risk of developing serious complications, per officials.
According to FDOH, the confirmed deaths in Florida have been reported in these counties:
- Bay County – two deaths.
- Broward County
- Hillsborough County
- St. Johns County
Additionally, confirmed cases have been reported in these counties:
- Collier County
- Dade County
- Duval County
- Escambia County
- Flagler
- Lee County
- Manatee County
- Martin County
- Okaloosa County
- St. Johns County
- Santa Rosa County
- Walton County
In 2024, FDOH reported that Florida had a total of 82 confirmed infections with 19 deaths.
Vibrio bacteria are responsible for approximately 80,000 illnesses each year in the United States. The CDC reports around 150 to 200 infections annually, with a mortality rate of about 20% among those infected, often leading to death within one to two days after symptoms arise.
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