FILE - In this Tuesday, Dec. 15, 2020, file photo, a droplet falls from a syringe after a health care worker was injected with the Pfizer-BioNTech COVID-19 vaccine at a hospital in Providence, R.I. The U.S. COVID-19 vaccination campaign has begun, and the few available doses are mostly going into the arms of health care workers and nursing home residents. But what about in January, February and March, when more shots are expected to become available? Who should get those doses? (AP Photo/David Goldman, File)
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