Pfizer to test Covid-19 vaccine in larger group of children below 12

The vaccine, made by Pfizer and German partner BioNTech SA, has been authorized for use in children as young as 12 in Europe, the United States and Canada. They receive the same dose as adults: 30 micrograms.

Pfizer Inc said on Tuesday it will begin testing its Covid-19 vaccine in a larger group of children under age 12 after selecting a lower dose of the shot in an earlier stage of the trial.