Prognosis

Pockets of Unvaccinated Americans Threaten to Prolong Pandemic

Less than 25% of the population is fully vaccinated in at least 482 U.S. counties, including in states with some of the highest overall vaccination rates

Photographer: David Paul Morris/Bloomberg
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As much of the country emerges from masking and social distancing, undervaccinated pockets in the U.S. still threaten to bring the virus roaring back.

Less than 25% of the population is fully vaccinated in at least 482 counties, according to an analysis of Centers for Disease Control and Prevention data by Bloomberg News. Many of these counties are more rural and less economically advantaged than the rest of the U.S., and a majority of their voters in the last presidential election chose Donald Trump, according to the analysis of 2,700 U.S. counties.