The amended authorizations allow use of Moderna's bivalent shot in children 6 months through 5 years of age, while the Pfizer/BioNTech vaccine can be given to those aged 6 months through 4 years.

Pfizer's shot can be administered as the third shot for those eligible and have not completed their primary vaccination series, the agency added.

(Reporting by Khushi Mandowara and Bhanvi Satija in Bengaluru; Editing by Sriraj Kalluvila)