Confusion Over Second-Dose Reserve Further Disrupts Vaccine Push

  • U.S. said it was releasing more shots after rollout faltered
  • States lash out after big bump in allocations fails to emerge

Vehicles wait in line to enter a Covid-19 vaccination drive-thru site in Greenville, Mississippi, on Jan. 15. 

Photographer: Rory Doyle/Bloomberg
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The U.S. decision to release vaccine doses left in its reserve is fueling further disarray in the nationwide immunization effort, just as millions more Americans have become eligible to receive shots.