Vermont health officials are investigating a shigellosis outbreak at the Wake Robin retirement community in Shelburne.
To date, 67 cases have been reported with one third testing positive for the bacterium.
Wake Robin is collecting data to pinpoint the source of the outbreak, and has closed the group dining hall until the outbreak has subsided.
Clinical manifestations of shigellosis range from watery or loose stools with minimal symptoms to more severe illness including high fever, abdominal cramps or tenderness, tenesmus, and mucoid stools with or without blood. Symptoms usually resolve in five to seven days but sometimes last for four or more weeks. Asymptomatic infection is possible.