The federal Centers for Disease Control and Prevention said about 16.2 million people have received at least one dose of a Covid-19 vaccine, and that about 2.8 million people had been fully vaccinated.
The federal government said Friday that it had delivered about 39.9 million doses to states, territories and federal agencies. The shipments, which came after a record-setting race to develop, study and approve a vaccine, have marked a turning point in the pandemic at a time when deaths and cases continue to set records.
But federal health officials recently acknowledged that the vaccine rollout had had a slower-than-expected start and said they did not have a clear understanding as to why only a portion of the doses shipped across the nation had made it into arms.
The C.D.C. reported that about 2.3 million doses have been administered to people in nursing homes and long-term-care centers. Deaths in those facilities have accounted for more than a third of the total coronavirus deaths in the country for most of the pandemic.
Federal regulators have given emergency approval to vaccines developed by Pfizer-BioNTech and Moderna. Both vaccines require patients to receive two doses spaced weeks apart.
In addition to allocating vaccines to states, territories and some federal agencies, the C.D.C. also distributes doses to three small countries that have special agreements with the U.S. government: Palau, Micronesia and the Marshall Islands.
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The C.D.C. said that its data might lag and, in certain circumstances, some doses could be counted more than once. In some places, health care providers have encountered challenges reporting vaccinations to the federal government, which has made their figures appear artificially low.
This table shows how many shots have been distributed and the percentage of those doses that have been used, as well as how many people in each jurisdiction have received at least one shot:
U.S. Total*
4.9%
0.8%
39,892,400
19,107,959
48%
Palau
13.4%
<0.1%
6,000
2,405
40%
American Samoa
11.4%
1.9%
18,450
6,569
36%
Alaska
9.2%
1.9%
155,500
81,096
52%
Northern Mariana Islands
8.7%
5.6%
18,650
7,720
41%
West Virginia
8.1%
2.0%
231,800
180,762
78%
Connecticut
7.0%
0.9%
477,250
287,440
60%
North Dakota
6.7%
1.6%
86,750
64,105
74%
South Dakota
6.4%
1.6%
100,275
70,643
70%
Washington, D.C.
6.3%
1.7%
90,225
56,864
63%
Oklahoma
6.3%
0.9%
496,350
287,502
58%
*Includes doses provided to Palau, Micronesia and the Marshall Islands.
Source: Centers for Disease Control and Prevention; U.S. Census Bureau | Notes: Geographically isolated areas such as Alaska, American Samoa, Guam and the Northern Mariana Islands can place orders for multiple weeks at once.
Every state was granted an amount of the vaccine roughly in proportion to its population.
Some states, like Alaska, North Dakota and Utah, are supposed to receive supplements for tribal governments that have elected to receive their vaccines through the state, rather than through the federal Indian Health Service.
According to the federal data, Alaska, West Virginia and Connecticut had begun vaccinating people at rates higher than all other states. Nevada had the lowest vaccination rate.
The work to distribute the vaccine comes at one of the darkest points of the pandemic. More than 412,000 people in the United States have died after contracting the virus.
The numbers reflect a national rollout that began in December — the first step toward protecting residents from a virus that continues to devastate the country.
The New York Times