US preps 10 million doses of COVID-19 vaccine for kids under 5, pending FDA authorization

Meticulous planning is already underway for young children's vaccines.

COVID-19 vaccines for kids under 5 have not yet been authorized, but the U.S.' rollout plan is already in the works.

The federal government is prepping an initial 10 million doses of the under-5 Pfizer formula, which will be ready to go out as soon as the Food and Drug Administration gives their final sign-off, sources familiar with the situation told ABC News.

The new three-microgram doses for this young population will be distributed in maroon-capped vials, according to a preliminary planning chart from the Centers for Disease Control and Prevention to states and obtained by ABC News.

This is to differentiate that specific formula from the vials for 5- to 11-year-olds, which are orange-capped. The formula for adults and older adolescents will have grey caps (previously it had purple caps, but that color will no longer be used).