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A Novel strain of Shigella species outbreak in a residential school in Pemagatshel, Bhutan, 2012

Background: A cluster of suspected shigellosis was reported from health center in Pemagatshel district to
Royal Center for Disease Control on 14th May 2012. The investigation was done to determine the cause and
risk factor for the outbreak so that appropriate control and prevention measures can be implemented.
Methods: A descriptive study was used for the outbreak investigation. The food items and drinks served to
boarding students were collected from the mess in-charge in order to assess their risk for the outbreak. The
kitchen and its premises were inspected to study the likely contamination by rodents and other animals. The
water and stool specimens were tested in the laboratory to identify all possible enteric pathogens.

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