“It’s as if we’ve been in a war zone for the last year,” said Dr. Marc Moss, head of the Division of Pulmonary Sciences and Critical Care Medicine at the University of Colorado School of Medicine, who has researched burnout among hospital workers. “It’s not anyone’s fault. We have tough jobs and we see tragedy.” Hospital workers have carried out duties that they have never done before — and likely never expected they would be called on to do — before COVID-19. For example, there were radiologists working in intensive care units during the pandemic, Gold said.