University of California - San Diego Feb 11 2026 Researchers at the University of California San Diego and the Veterans Affairs San Diego Healthcare System have identified a distinct biological pattern of chronic rhinosinusitis (CRS), a chronic respiratory illness frequently associated with exposure to airborne toxins, such as wildfire smoke and military burn pits. The research team, led by first author and UC San Diego Assistant Professor of Medicine Xinyu "Steve" Wang, MD, PhD, found that