Three Chicago-area hospitals evaluate patients, staff for tuberculosis

Three Chicago-area hospitals where hundreds may have been exposed to tuberculosis from a doctor-in-training were working to contact patients and narrow down how many people were at risk. The 26-year-old female Northwestern University pediatric resident was diagnosed last week with TB. She most recently had worked at Children's Memorial Hospital, from Nov. 20 to April 3, where she was in contact with at least 150 children and more than 300 workers. So far no one has tested positive for TB, though only a small number of patients apparently have been tested, hospital officials said.