The Centers for Disease Control and Prevention is reporting frightening data on Americans and the Pfizer and Moderna COVID-19 vaccines.
According to the CDC, about 8% of people who got their first dose of the vaccine have not gone back for their second shot -- which amounts to over five million people, as reported by ABC-7 in New York.
The CDC clarified the data by saying that it's also possible that some of these people are getting both shots but at different clinics, making it more difficult for the agency to keep track.
"If a person received the two doses from different reporting entities, those two doses may not have been linked together," a CDC spokesperson said, according to CNN.
"For example, if a person received their first dose at a clinic run by the state, and second dose from a tribal health clinic, they might not be linked and it could look like they missed the second dose."
According to the CDC, 95 million Americans, about 28.5% of Americans have been fully vaccinated and about 140 million, about 42.2% have received at least one dose.
Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, told CNN's Jim Acosta on Sunday it’s not uncommon for people to miss or skip the second jab from a vaccine.
"Obviously whenever you have a two-dose vaccine, you're going to see people who for one reason or other -- convenience, forgetting, a number of other things -- just don't show up for the second vaccine," Fauci said.
"I'd like it to be a 0%," he said, "but I'm not surprised that there are some people who do that."