Article content As the slow march to COVID vaccination in older age clusters continues, word this week that Pfizer’s COVID vaccine appears extraordinarily good at protecting 12- to 15-year-olds was “great,” though not entirely surprising news, said Dr. Fatima Kakkar. Pfizer’s vaccine is already authorized for ages 16 and older, and younger teens aren’t that much different. We apologize, but this video has failed to load. Try refreshing your browser, or COVID shots for children are coming. Why we need them to end the pandemic Back to video The bigger question is the pre-puberty age group — below 11 — and younger infants. “There we have to be really careful with dosing,” said Kakkar, an infectious diseases pediatrician at CHU Sainte-Justine in Montreal. “The response might be different.”