| late detection of a shigellosis outbreak in a school in madrid. | even though shigellosis in spain is rare, an indigenous outbreak is occasionally detected. we describe an outbreak in a school in madrid caused by person-to-person transmission of shigella sonnei. after the detection of shigella sonnei in a stool sample from a 3 year old girl, an investigation at her school was initiated. questionnaires were distributed to the parents of 520 pupils attending the school. a case was defined as a school case if it was the first case in a child's household, and as a ... | 2005 | 16282643 |