Division of Surveillance, Hazard Evaluations, and Field Studies, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, Cincinnati, Ohio 45226, USA. let7@cdc.gov
BACKGROUND: On September 11, 2001, 600-800 New York City transit (NYCT) workers were working near the World Trade Center (WTC) Towers. After the disaster, employees reported physical and mental health symptoms related to the event. METHODS: Two hundred sixty-nine NYC transit employees were surveyed for mental and physical health symptoms 7(1/2) months after the WTC disaster. RESULTS: Workers in the dust cloud at the time of the WTC collapse had significantly higher risk of persistent lower respiratory (OR = 9.85; 95% CI: 2.24, 58.93) and mucous membrane (OR = 4.91; 95% CI: 1.53, 16.22) symptoms, depressive symptoms (OR = 2.48; 95% CI: 1.12, 5.51), and PTSD symptoms (OR = 2.91; 95% CI: 1.003, 8.16) compared to those not exposed to the dust cloud. Additional WTC exposures and potential confounders were also analyzed. CONCLUSIONS: Clinical follow up for physical and psychological health conditions should be provided for public transportation workers in the event of a catastrophic event.