Kathy Egan [email protected] Don’t swim at the beach with open cuts, and don’t eat raw oysters! Four people have died and at least seven others have been infected by Vibrio vulnificus, a type of flesh-eating bacteria found in salty or brackish warm water. The four deaths were reported in Bay County, Hillsborough County, Broward County and St. Johns County. That means frolicking in the waters of both the Gulf of Mexico and the Atlantic Ocean demands extra caution this summer. When the thermometer rockets skyward, Florida beaches call out to us, so we pack the cooler and head to our favorite shores to seek relief from the scorching heat. Indeed, our seemingly never-ending…