The world’s first mass coronavirus inoculation campaign for children kicked off in earnest in the United States on Thursday after the federal government cleared the way for the Pfizer-BioNTech vaccine to be available to those in that age group.

The world’s first mass coronavirus inoculation campaign for children kicked off in earnest in the United States on Thursday after the federal government cleared the way for the Pfizer-BioNTech vaccine to be available to those in that age group.