Over 100 million people vaccinated in US amid race against the coronavirus
Above video: Doctors explain how to keep young kids safe until vaccine is approved
The U.S. has vaccinated 101 million Americans in a race against an uptick in COVID-19 cases.
President Joe Biden's administration previously celebrated a similar milestone: 100 million doses being administered. Most vaccines in use in the U.S. require two doses.
It comes as the Centers for Disease Control and Prevention updated guidance on people looking to travel, saying fully vaccinated people can travel within the U.S. without getting tested for the coronavirus or going into quarantine afterward.
Meanwhile, states are doubling their efforts to vaccinate as many people as possible by expanding eligibility and touting the vaccines as essential to getting the country back to normal.
Despite the progress, that doesn't mean the U.S. can let its guard down, health officials say.
"Getting more people vaccinated as quickly as possible and taking prevention measures to stop the spread of COVID-19 is the path out of this pandemic and back to our everyday activities," said Rochelle Walensky, the director of the CDC.
CNN and The Associated Press contributed to this report.