Moderna says its low-dose COVID vaccines work for children under 6

Moderna's COVID-19 vaccine works in babies, toddlers and preschoolers, the company announced Wednesday — and if regulators agree it could mean a chance to finally start vaccinating the littlest kids by summer.

Moderna said in the coming weeks it will ask regulators in the U.S. and Europe to authorize two small-dose shots for youngsters under 6. The company also is seeking to have larger-dose shots cleared for older children and teens in the U.S.

The nation's 18 million children under 5 are the only age group not yet eligible for vaccination. Competitor Pfizer currently offers kid-sized doses for school-age children and full-strength shots for those 12 and older.