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The U.S. has administered more than 300 million COVID-19 vaccine doses, meeting another milestone in the effort to tamp down the coronavirus.

Now 63.5 percent of U.S. adults have received at least one vaccine dose, and 51.5 percent of the total population has received at least one dose. Despite the progress, the country may fall short of President Joe Biden’s goal for 70 percent of adults to receive at least one shot by July 4.

As of Sunday, 14 jurisdictions have met the 70 percent goal, according to the latest CDC tally. The majority of those are states in the Northeast and West. Another 15 states and the District of Columbia have passed the 60 percent mark and will likely reach Biden’s goal. On the opposite end, six states, including four in the South, have not passed the 40 percent threshold.

Head over to WebMD to read the full story.