Hello, The symptoms of bacterial infections depend upon the mode of transmission or spread such as: 1. Airborne (coughing and sneezing) 2. Contact with infected people, especially through kissing and sex. 3. Contact with contaminated surfaces, food, and water. 4. Contact with infected creatures, including pets, livestock, and insects such as fleas and ticks. However, the most common symptoms of bacterial infection include fever, coughing, headache, inflammation, vomiting, diarrhea, fatigue, burning micturition, foul smell vaginal discharge, etcetera. Legionnaires disease is caused by a bacterium known as Legionella. Its symptoms usually develop two to ten days after exposure to Legionella bacteria and include headache, muscle pain, and fever with chills. By the second or third day the signs and symptoms that may include cough which may bring up mucus and sometimes blood, shortness of breath, chest pain, nausea, nausea, vomiting, and diarrhea. Confusion or other mental changes appear later. Although Legionnaires disease primarily affects the lungs, it occasionally can cause infections in wounds and in other parts of the body, including the heart. The most commonly reported infection from the swimming pool users is diarrhea which can be caused by Cryptosporidium, Giardia, Shigella, Norovirus, and E. coli. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Mohammed Taher Ali