Marine Safety Forum has issued a warning regarding legionella in showerheads are two of its member’s vessels tested positive for the bacteria. Symptoms of legionella infection include fever, chills, and dry cough. Advanced stages of the disease cause problems with the gastrointestinal tract and the nervous system and lead to diarrhea and nausea. Other advanced symptoms of pneumonia may also present.
Says MSF: “Recent fresh water samples taken from shower heads on two of a members vessels tested positive for active Legionella bacteria. All of the company vessels were reminded of the maintenance requirements for Fresh Water Tanks and Distribution Systems as per MGN 397 (M+F) Guidelines for the Provision of Food and Fresh Water on Merchant Ships and Fishing Vessels, and the following instructions were issued by
“All shower heads must be cleaned in a 50 ppm chlorine solution at intervals not exceeding 3 months as per the company’s planned maintenance system, especially those in unused cabins.