The CDC report builds on trials done by companies on this age group, which showed high immune response against the virus but which were not designed to demonstrate efficacy against hospitalisation.
The Pfizer/BioNTech vaccine is authorised for children as young as 12, and the companies are seeking authorisation for use in those as young as five years of age.
A panel of expert advisers to the US Food and Drug Administration is expected to weigh in on data on young children later this month.
The CDC data “reinforces the importance of vaccination to protect youths against severe Covid-19”, the study authors said.
Reuters