Least vaccinated US counties have something in common: Trump voters
By Danielle Ivory, Lauren Leatherby and Robert Gebeloff New York Times,Updated April 18, 2021, 2:19 p.m.
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A vial of vaccine diluent, left, is sits on a table next to a vial of the Pfizer-BioNTech COVID-19 vaccine as Cheyenne-Laramie County Health Department nurse Valencia Bautista, left, prepares to administer Wyoming's first shot of COVID-19 vaccine to Terry Thayn, who is also a nurse for the department, on Tuesday, Dec. 15, 2020, in Cheyenne, Wyo.Mead Gruver/Associated Press
About 31% of adults in the United States have now been fully vaccinated. Scientists have estimated that 70% to 90% of the total population must acquire resistance to the virus to reach herd immunity. But in hundreds of counties around the country, vaccination rates are low, with some even languishing in the teens.