The share of adults who had received at least one vaccine dose was 55% overall, and ranged significantly across the country from a low of 41% (Alabama) to a high of 74% (New Hampshire). In addition, there is evidence of a decline in the pace of new uptake in most states. The daily rate of first dose administration at the national level is 451 per 100,000, ranging from 136 per 100,000 (Mississippi) to 889 (Rhode Island). Most states (31 of 51) are vaccinating below the national rate, reflecting the fact that vaccination rates are generally higher in larger states (e.g., California and Pennsylvania). Furthermore, the rate of first dose administration per 100,000 in the last week dropped for the U.S. overall (-27%) and for almost every state (45 of 51) (see Table 1). At the higher end of the vaccine coverage spectrum, more than 60% of the adult population has received at least one dose in 12 states. These states are primarily in the Northeast (8 of 12). Seven have vaccination coverage of at least 65% and all but 2 (New Hampshire and New Mexico) are administering first doses at well above the U.S. rate. Eight of the 12 states have seen declines in first dose administration rates over the past week, suggesting that these states may be approaching or have reached demand saturation, albeit at relatively high vaccination coverage levels and rates of administration.