Waterborne Disease & Outbreak Surveillance Reports

The Waterborne Disease and Outbreak Surveillance System (WBDOSS) is the primary source of data concerning the scope and health effects of waterborne disease outbreaks in the United States. CDC and the U.S. Environmental Protection Agency (EPA) periodically review outbreak reports from U.S. states and jurisdictions and report on outbreak characteristics, including the water systems, venues, settings, numbers, and causes of outbreak-related illnesses.

CDC published summary reports in MMWR Surveillance Summaries for outbreaks reported from 1971–2008. Outbreak report data from 2009 forward are published in the MMWR Weekly with supplemental content posted on this website.