The two developments came amid a vaccination program that began only in the last week and has given initial shots to about 556,000 Americans, according to the Centers for Disease Control and Prevention.
The COVID-19 vaccine developed by Pfizer Inc. and Germany's BioNTech already is being distributed, and regulators last week gave approval to the one from Moderna Inc. that began shipping Sunday.
Earlier this month, the Advisory Committee on Immunization Practices said health care workers and nursing home residents—about 24 million people—should be at the very front of the line for the vaccines.
Sunday's vote by the panel was who should be next in line, and by a vote of 13-1, it decided that it should be people 75 and older, who number about 20 million, as well as certain front-line workers, who total about 30 million.
The essential workers include firefighters and police; teachers and school staff; those working in food, agricultural and manufacturing sectors; corrections workers; U.S. Postal Service employees; public transit workers; and grocery store workers. They are considered at very high risk of infection because their jobs are critical and require them to be in regular contact with other people.
