This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

DENVER (KDVR) — Regulators from the U.S. Food and Drug Administration on Friday authorized the first COVID-19 shots for infants and preschoolers. Vaccinations could begin as soon as next week.

The approval would apply to children between the ages of 6 months and 5 years. U.S. Census records count roughly 337,000 in Colorado under the age of 5, the majority of whom would be eligible for vaccination.

Records suggest Colorado’s children under 5 years old would be vaccinated at a quick clip. According to data compiled by the Kaiser Family Foundation, Coloradans are among the nation’s most likely to vaccinate their young children.

Colorado has the nation’s 22nd-highest number of children under 5. According to the foundation, 24.2% of children 5-11 have been vaccinated with at least one dose, the nation’s ninth-highest percentage.

Rates of child vaccination tend to be highest in New England and the Pacific Northwest and lowest in the Southeast. Vermont has vaccinated 45.6% of its children, while West Virginia has vaccinated only 3.6%.