Begaye lives, about two-thirds of which is covered by the Navajo, Fort Apache and Zuni Indian reservations, 42% of the population is fully vaccinated, according to Centers for Disease Control and Prevention data.

In Glacier County, Mont., home of the Blackfeet Nation, 46.7% of the population is vaccinated.

In Blaine County, Mont., where one-third of the population lives on the Fort Belknap Reservation, it is 45.9%.