This study investigated the relationship between hospital nurses’ professional care obligation, their attitudes towards SARS infection control measures, whether they had ever cared for SARS patients, their current health status, selected demographic characteristics, and the time frame of the data collection (from May 6 to May 12 2003 during the SARS epidemic, and from June 17 to June 24 2003 after the SARS epidemic). The study defines 172 nurses’ willingness to provide care for SARS patients as a professional obligation regardless (...) of the nature of the disease. A conceptual model was developed and tested using ordinal logistic regression modelling. The findings showed that nurses’ levels of agreement with general SARS infection control measures and the lack of necessity for quarantining health care workers who provided care for SARS patients were statistically significant predicators of the nurses’ fulfilling of their professional care obligation. Suggestions and study limitations are discussed. (shrink)