As the delta mutation of COVID-19 spreads, the number of new vaccinees in areas with low vaccination rates in the United States has increased significantly, local media reported.



White House Chief of Staff Ron Klein said in a tweet yesterday that "the number of vaccinations exceeded 700,000 for the first time for four days in a row."



In fact, according to the Centers for Disease Control and Prevention (CDC) statistics, Alabama, the state with the lowest COVID-19 vaccination rate among the 50 states, had more than 14,000 vaccinations on the 25th of last month.



In Florida, where new cases surged 50% in the past week, the number of vaccinations increased by 15%.



The cumulative number of confirmed COVID-19 cases in the United States has exceeded 35 million, and the delta mutation has recently become the dominant species among new confirmed cases.