Quick update: A few days ago I wrote about a Legionnaires outbreak in Chicago at the Marrioott hotel: Time for hotels to start surveying their microbes.
CNN is reporting that the hotel has identified a putative source for the Legionella bacterium that causes Legionnaires: the fountain in the lobby and/or a spa: Chicago hotel shuts fountain, spa after fatal Legionnaires’ outbreak – CNN.com.
Also see this video of a panel discussion on the outbreak from Chicago Tonight