Hurricane Harvey brought record rainfall to the Houston-Galveston region and the Texas coast. After making landfall near Rockport, Texas as a Category 4 storm on August 25, 2017 and lingering for more than four days, Harvey dropped more than 50 inches of rain in parts of Houston, leaving behind a devastated region.
Written by Galveston Bay Foundation's Scott Jones, Director of Advocacy.
Here at the Galveston Bay Foundation we receive tweets, Facebook posts, and phone calls from time-to-time about news stories of wade fishermen or others who recreate in bay waters becoming victim to “flesh-eating” bacteria. The stories are horrific in recounting the tissue loss or death suffered by those who are stricken.
The bacteria responsible, Vibrio vulnificus, is naturally present in ocean or bay waters throughout the year. However, infections caused by this bacteria are seasonal, typically occurring from May through October when coastal waters are warmed by the summer sun. Vibrio vulnificus infection can result when the bacteria enter the human body through an open wound or through consumption of raw or undercooked shellfish such as oysters.
According to the Texas Department of State Health Services, the number of illnesses annually reported in Texas over the last 10 years is low (15 to 30 cases per year). Based on the relatively small number of reported illnesses, it would appear that the vast majority of people do not suffer ill health effects from coming in contact with the bacteria. Those who do become infected by Vibrio vulnificus often have pre-existing health issues, such as a compromised immune system, that make them susceptible to infection.
Bay waters and shellfish are not regularly monitored for Vibrio vulnificus. Therefore, we do not know concentrations of the bacteria in waters along the Texas Coast, but there are things you can do to reduce your risk of exposure. Do not expose open wounds to ocean or bay waters; immediately clean and disinfect any wound you receive while recreating in ocean or bay waters; and seek medical attention should any wound become inflamed. Properly refrigerate raw shellfish, avoid cross-contamination of food preparation surfaces with raw seafood, and if you have a pre-existing health condition, cook your shellfish before eating.
While there is no regular testing of our coastal waters for Vibrio vulnificus, the Texas Commission on Environmental Quality monitors area waterways for other types of bacteria that serve as indicators of disease-causing bacteria and viruses found in our local lakes, rivers and bayous. Additionally, the Texas Beach Watch program monitors and issues advisories for Gulf and bay beaches. You can also visit the Galveston County Health District for more information on the Galveston County beach monitoring sites.
Visit the Galveston Bay Report Card at www.GalvBayGrade.org for more information about health risks associated with Galveston Bay. Remember, Galveston Bay is a great place to live, work, and play. As with so many things in our daily lives, educate yourself about your health risks and make smart choices whenever you can using available information.