Abstract
During the summer of 2003, a gastroenteritis outbreak spread throughout a holiday resort in central Italy. Fecally contaminated groundwater and seawater were leaking into the non-drinking-water system, which was found to be connected to the drinking-water system of a large resort. This contamination had a primary role in the onset of the outbreak and spread of the infection.
Highlights
Our study included an epidemiologic survey and an environmental survey to check the hypothesized origin of infection
During the summer of 2003, a gastroenteritis outbreak spread throughout a holiday resort in central Italy
Several episodes of acute gastroenteritis had been observed in coastal holiday resorts of central Italy before 2003
Summary
Our study included an epidemiologic survey (tracing the infection sources of the outbreak) and an environmental survey to check the hypothesized origin of infection. Contaminated groundwater and seawater were leaking into the non–drinking-water system, which was found to be connected to the drinking-water system of a large resort. Data collected from case-patients and control patients included type of accommodation in the resort, contact with other infected persons, and exposure to possible risk factors in the 3 days before symptom onset. Water samples were tested for fecal or pathogen contamination.
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