Pfizer Says COVID-19 Vaccine Response Robust in Young ChildrenMuch anticipated findings from Pfizer/BioNTech suggest three doses of COVID-19 vaccine protect kids ages 6 months to 5 years old. WebMD Health Newsadminmayo 24, 2022Uncategorized Much anticipated findings from Pfizer/BioNTech suggest three doses of COVID-19 vaccine protect kids ages 6 months to 5 years old. WebMD Health News