2013-2014 Outbreaks Associated with Environmental & Undetermined Exposures to Water Surveillance Report: Supplemental Tables

These tables provide supplemental information not published in Waterborne Disease Outbreaks Associated With Environmental and Undetermined Exposures to Water – United States, 2013-2014 (MMWR Weekly).

Table. Waterborne disease outbreaks associated with environmental and undetermined exposures to water* (n = 28), by state or jurisdiction and month of first case onset — Waterborne Disease and Outbreak Surveillance System, United States, 2013–2014

Environmental Exposures to Water

Undetermined Exposures to Water

Abbreviations: AGI = acute gastrointestinal illness; ARI = acute respiratory illness; Skin = illnesses, conditions, or symptoms related to the skin; NR = not reported.

* The environmental exposure to water category includes outbreaks not associated with exposure to drinking water systems (i.e., public, private or bottled water) or recreational water venues (e.g., swimming pools, lakes). The undetermined exposure to water category includes outbreaks where a single water exposure (i.e. treated or untreated recreational water, drinking water, or environmental exposures) could not be determined based on available evidence.

† Etiologies listed are confirmed, unless indicated “suspected”; for multiple-etiology outbreaks, etiologies are listed in alphabetical order.

§ The category of illness reported by ≥50% of ill respondents; all legionellosis outbreaks were categorized as ARI.

¶ Value was set to “missing” in reports where zero hospitalizations were reported and the number of people for whom information was available was also zero.

** Value was set to “missing” in reports where zero deaths were reported and the number of people for whom information was available was also zero.

†† This outbreak was associated with a water storage container used in a tattoo and piercing shop.

§§ This outbreak setting was associated with a spring on a private property in a rural area.

¶¶ This outbreak from 2009 was not included in previous NORS reports. Data from this outbreak are presented in this table but not included in the analysis and discussion.

*** Strength-of-evidence class determined on the basis of epidemiologic, clinical laboratory, and environmental data (e.g., water quality data) provided to CDC. For more information, see Strength-of-Evidence Classification for Waterborne Disease & Outbreaks.

††† Deficiency classification assigned to all outbreaks associated with drinking water. For more information, see Deficiency Classification for Drinking Water and Other, Non-recreational Waterborne Disease Outbreaks.

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