Outbreaks Associated With Environmental and Undetermined Water Exposures — United States, 2011-2012.

The article focuses on the association between waterborne disease outbreaks and environmental and undetermined water exposures in the U.S. from 2011 to 2012. Topics include the occurrence of legionellosis outbreaks in hotels and motels, hospitals, and healthcare facilities, the contribution of ornamental fountains, cooling tower, and storage tank in legionellosis outbreaks, and the need for closer examination of the reported outbreaks to prevent diseases.