As Gulf waters reach record temperatures, health experts are sounding the alarm over a sharp rise in Vibrio vulnificus infections, a potentially deadly bacterium that thrives in warm, brackish coastal waters.
According to Dr. Markalain Derry, an infectious disease specialist, this surge is less about infection and more about the environment.
“The Gulf’s warming temperatures have created the perfect conditions for Vibrio to flourish, and we’re now seeing cases grow exponentially," says Derry.
Vibrio vulnificus can cause severe illness or death when it enters the body through open wounds or is ingested in raw or undercooked seafood, particularly oysters. While treatment is available, Derry warns that access to care is a growing barrier when timing is everything.
“Successful treatment depends entirely on how quickly someone is diagnosed and admitted,” Derry said. “But we’re seeing more and more people delay care or avoid the hospital altogether, which lowers the odds of recovery.”
Dr. Derry recommends avoiding Gulf water entirely if you have open cuts or skin wounds. If you are exposed, clean the area immediately with soap and clean water, apply an antiseptic, and bandage the wound. Watch closely for signs of infection such as redness, swelling, or pain.
In addition, avoid eating raw or undercooked seafood, especially oysters. If you experience symptoms such as watery diarrhea, fever, or chills after consuming seafood, head to the nearest emergency room right away.
“This bacteria is curable,” Derry said. “But early action, both in prevention and treatment, is what saves lives.”