Pfizer covid shot 80 percent effective in younger kids, early data shows
Pfizer and German partner BioNTech said their three-dose coronavirus vaccine regimen was safe and generated a robust immune response in infants, toddlers and preschoolers.
The data is a step toward a vaccine for infants, toddlers and children younger than 5 — the last age group to lack access to a coronavirus vaccine in the United States.