The U.S. is not going to meet President Joe Biden's July 4 goal of having 70 percent of adults with at least one COVID-19 vaccine dose.
As of July 3, around 67 percent of American adults have been vaccinated, according to the Centers for Disease Control and Prevention (CDC).
In some states and counties, the vaccination rate is much lower. About 1,000 U.S. counties have seen less 30 percent of the population receive at least one shot.
Doctors warn these numbers mean that the country is still very far from reaching herd immunity, which is worrying as the Indian 'Delta' variant spreads rapidly in the U.S.
It could take years for the vaccine effort to truly reach everyone who is currently unvaccinated, said physician and health equity expert Dr Uché Blackstock.
Use the interactive map above to explore data from the CDC.
On May 4, Biden announced a new vaccination goal for the U.S: an aim to administer at least one vaccine shot to 70 percent of the adults in the country by July 4.
The goal was calculated to help the U.S. approach herd immunity - a term that public health experts use to describe what happens when enough people in a community are protected against a disease so outbreaks cannot thrive in that setting.
Scientists have worked throughout the last year to determine what share of the population may need to be vaccinated for the U.S. to reach herd immunity.
While it's difficult to pinpoint a precise estimate, 70 percent has been considered a significant milestone on that path to protection.
The country had hit Biden's previous big vaccination goal: 200 million vaccine shots were administered during his first 100 days in office.
But the U.S. fell short of this one with 66.8 percent of U.S. adults receiving at least one dose and 57.9 percent fully vaccinated, CDC data show.
With the current slow pace of vaccinations - about 1.1 million shots are administered a day, according to Bloomberg - the country is unlikely to catch up to 70 percent over the weekend.
'We don't have enough people vaccinated, not even close, to reach herd immunity,' Dr Katelyn Jetelina, an epidemiologist at the University of Texas and author of the Your Local Epidemiologist newsletter, told DailyMail.com.
'It also means we've reached, or are about to reach, saturation [of the vaccine market]. We need to start becoming very innovative about how to address vaccine hesitancy as well as how to address vaccine equity.'
Some states have passed Biden's goal with flying colors.
In Vermont, Hawaii, and Massachusetts, more than 80 percent of adults are partially vaccinated. Other states in the Northeast are catching up, as is New Mexico.
Meanwhile, some states in the South and Midwest are still under 50 percent.
Mississippi has the lowest one-dose adult vaccination rate at 46.3 percent. Only 38.3 percent of adults in the state are fully
