US regulators approved Moderna Inc.’s Covid vaccine for children, but for a narrower group than before, continuing Robert F. Kennedy Jr.’s controversial policy that restricts access to the shots for some kids.

The U.S. Food and Drug Administration has granted full approval for Moderna's COVID-19 vaccine, Spikevax, in children aged 6 months through 11 years who are at an increased risk of the disease, the company said on Thursday.