State and Marshall County health officials have tested cooling towers as part of their investigation into the ongoing legionella outbreak. They say they believe a tower is the likely source.

"It's not like you can clean it and you're one and done," said Mendy Moritz, with Clear Air Enviro-Services. "I mean, you ...

It is typically inhaled through aerosolized water droplets from mist created by cooling towers, hot tubs and decorative fountains. Legionnaires' disease is not contagious and most people who are ...