Czech health officials warn of Legionella risk from stagnant water after holidays

The Czech State Health Institute reports a rise in Legionella infections, with 620 cases recorded in 2024 and 95 deaths, a sharp increase from three years earlier. The bacterium thrives in warm, stagnant water that can accumulate in household pipes after periods of non‑use, such as vacations. Inhalation of aerosolised water droplets, especially from hot showers, can cause Legionnaires' disease, which is particularly dangerous for seniors, immunocompromised patients, and those undergoing cancer treatment.

Officials advise residents returning from holidays to let both taps and showers run for several minutes, preferably with hot water, and to keep bathroom windows open to disperse steam. Adjusting the showerhead toward the wall and briefly leaving the bathroom can also reduce exposure. These simple measures are cost‑free and aim to prevent further infections.