FILE - In this March 16, 2020, file photo, vials used by pharmacists to prepare syringes used on the first day of a first clinical trial of the potential vaccine for COVID-19 rest on a lab table at the Kaiser Permanente Washington Health Research Institute in Seattle. An influential scientific panel on Tuesday, Dec. 1, is set to tackle one of the most pressing questions in the U.S. coronavirus epidemic: When the first doses of COVID-19 vaccine become available, who should be at the front of the line for shots? (AP Photo/Ted S. Warren, File)

Use Information This content is intended for editorial use only.
For other uses, additional clearances may be required.