Survey data from the Centers for Disease Control and Prevention show a growing willingness to get vaccinated against COVID-19. But resistance remains entrenched among some groups disproportionately affected by the virus.

The survey shows intent to vaccinate grew between September and December by about 10 percentage points among adults and priority groups, especially those ages 65 and older.

But only about half of adults younger than 65 said they were "very likely" to get vaccinated, even among essential workers and those with underlying medical conditions.

Resistance was highest in rural areas and among younger adults, women and Black people, as well as adults with lower educational attainment, lower income and no insurance.

The authors call for better messages and strategies to build public confidence. 

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