一億次注射（或打了一億人次），實際人數約六千多萬。另外，美國行政管理水平不是一般的差；美國人，不是一般的“不聽邪”

https://www.beckershospitalreview.com/public-health/states-ranked-by-percentage-of-covid-19-vaccines-administered.html

As of 6 a.m. EST March 11, a total of 131,131,470 vaccine doses had been distributed in the U.S., and 98,203,893 had been administered, or 74.89 percent. Additionally, 64,071,674 people had received one or more doses of the vaccine, and 33,863,127 had received the full two doses. That means 19.3 percent of the U.S. population had received at least one dose of the vaccine, and 10.2 percent had been fully vaccinated.