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Deaths and illnesses related to Vibrio vulnificus, a bacterium that can lead to flesh-eating infections, are on the increase this summer, with four deaths reported in Florida and Louisiana and another in North Carolina.
What is Vibrio vulnificus?
V. vulnificus is a naturally occurring bacteria that thrives in warm, brackish seawater such as the Gulf of Mexico. It can be found in higher concentrations from May to October when the weather is warmer, according to the New York State Department of Health.
What are the symptoms of vibriosis?
Common symptoms of vibriosis, the illness caused by a vibrio infection, include watery diarrhea, stomach cramps, vomiting, fever and chills. Infected wounds often are red, swollen and painful. Symptoms usually appear within 12 to 24 hours and can last one to seven days. Most people infected with vibriosis will recover on their own; however, severe illness may result in hospitalization or death. It is important to seek prompt medical attention, according to the New York State Department of Health.
How does it spread?
There are two known routes for human infection. The bacteria can enter the body through open wounds when a person swims, wades or walks in warm marine waters where V. vulnificus thrives.
People can also be infected by consuming raw shellfish, particularly oysters, that come from warm coastal waters during the summer months. There is no evidence of person-to-person transmission.
How infectious is it?
Infections are rare. Vibriosis is typically mild but can be dangerous especially for older adults who have developed a chronic condition (such as liver or kidney disease) or have a weakened immune system, according to the CDC. Those who take stomach-acid reducers may also be at increased risk because stomach acid helps kill harmful germs.
Most reported infections in the U.S. have been from the Gulf Coast region. Since 2007, Florida has averaged 37 infections and nine deaths annually.
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