Years of masking and distancing during the COVID-19 pandemic protected many of us from the common cold and flu, and isolation protected children from respiratory illnesses like RSV. So, why are so many kids getting sick this winter? In this episode, Stephanie Desmon talks to Dr. Mike Rose, a pediatric resident at the Johns Hopkins School of Medicine about a concept called ‘immunity debt’ and why it could explain the recent increase in pediatric illness and hospitalizations.