There was an outbreak of foodborne and waterborne disease among high schoolstudents at Okcheon in June, 2018. First attack occurred June 5(th) but seven days later it was notified. The purpose of this investigation was to evaluate the pathogen of outbreak and cause of delayed notification.
METHODS:
First, we did a questionnairesurvey for 61 cases and 122 controls to find what symptoms they had and whether they ate foods or drank water from June 2(nd) to June 12(th). Second, we investigated the environment of cafeteria and drinking water. Third, we examined specimen of cases and environment to identify bacteria or virus.