Raboud, J. Shigayeva, A., McGeer, A., et al. (2010). Risk Factors for SARS Transmission from Patients Requiring Intubation: A Multicentre Investigation in Toronto, Canada. PLoS One. 5(5):e10717.
The authors conducted a retrospective cohort study to identify risk factors for transmission of SARS-CoV during intubation from confirmed SARS patients to healthcare workers. They found that close contact with the airway of severely ill patients and failure of infection control practices to prevent exposure to respiratory secretions were associated with transmission of SARS-CoV.