摘要：An outbreak of Shigella sonnei infection in a long-stay nursing centre was detected during routine surveillance ofnotifications in July 1999. Subsequent investigations identified 13 cases of multi-resistant S. sonnei infectionaffecting nine staff, three community members associated with the centre and one resident of the centre. Eachisolate of S. sonnei was genetically indistinguishable. The outbreak investigation identified contact with residentswith vomiting and diarrhoea as a significant risk factor for infection amongst staff providing nursing care. Thisassociation, and the duration of the outbreak over several months, suggests that transmission was most likelyperson-to-person. This outbreak demonstrates the importance of infection control policies and hygiene measures inlong-stay nursing facilities
