"Patient safety is our top priority, and we are taking this situation very seriously," Bernal said. "All affected operating rooms have been closed and will remain so until we are confident that the areas are clear of Aspergillus. We are postponing or diverting some surgical cases and moving others to our Bellevue campus. We will also perform some cases in areas of our hospital that have been determined to be clear of Aspergillus, like our cardiac catheterization facility. We are working with an outside industrial hygienist to investigate the source of the Aspergillus and implement mitigation measures. We have also reported the situation to the Washington State Department of Health."