18 months into a global pandemic, half of the United States has been vaccinated against COVID-19, but we are at the height of yet another surge as the highly contagious Delta variant rages. Dr. Wejing Sun, director of Medical Oncology and associate director for clinical research at The University of Kansas Cancer Center, explains how we care for one of our most vulnerable populations, our cancer patients, who are uniquely susceptible to this deadly infectious disease.