Health care workers and residents of long-term care facilities is the answer according to the CDC. STAT News reports:
Members of the Advisory Committee on Immunization Practices voted 13 to 1 to put health care providers and long-term care residents — two groups that represent about 24 million Americans — at the top of the vaccine priority list. Health care providers is a very broad group encompassing people who work in hospitals and outpatient clinics, the staff of long-term care facilities, people who deliver home health care or who work in public health, emergency medical services and pharmacies.
How many people will get vaccinated this year? The CDC estimates that there will be capacity to vaccinate about 20m people by the end of December. The Pfizer vaccine will likely be approved soon after December 10 advisory committee meeting; the Moderna vaccine is expected to be approved soon after the same group meets on December 17.