Daily vaccination rates have slowed over the past week, just as the Biden administration meets its goal of administering 200 million shots in 100 days.

Roughly 1.8 million shots were administered on Tuesday in the United States, the lowest daily total since April 6, according to Bloomberg. Immunization rates have leveled off over the past week at about 3 million shots per day after reaching a seven-day record of about 3.4 million on April 13.