The Food and Drug Administration now says it will not change recommend doses of COVID-19 vaccines.

The statement comes after reports that the agency was considering giving half doses of Moderna's vaccine.

The FDA says, in part,  "at this time, suggesting changes to the FDA-authorized 'dosing' or 'schedules' of these vaccines is premature."

The head of Operation Warp Speed said clinical data shows the vaccine can be just as effective at half-doses for those aged 18 to 55.