This fall, most Canadian kids returned to school and daycare with few or no COVID-19 measures. Beyond the coronavirus itself, that's meant all sorts of other viruses have started circulating more widely among children — which is, in some ways, a return to normal. But some are spreading earlier in the season than usual, and hospitals across Canada are reporting a surge in child admissions. Data from Ontario says triple the seasonal average of kids have been heading to the province's ERs with respiratory illnesses. Today, Dr. Fatima Kakkar returns to explain what's driving the surge of kids' admissions, and address parents' concerns over drug shortages and their children's immune systems. She's an infectious diseases pediatrician at Sainte-Justine Hospital in Montreal.