More than 43 million Americans - 1 in 6 adults - have been fully vaccinated against COVID-19, according to the CDC

• One in six adults in the US has been fully vaccinated for COVID-19, according to the CDC.
• Approximately 40% of Americans over the age of 65 have been vaccinated for the disease.
• President Biden has said he expects every adult to be eligible to receive a vaccine by May.

One in six adults in the US - about 17% of the population- have been fully vaccinated against COVID-19 as of Saturday, according to data published Saturday by the Centers for Disease Control and Prevention.

More than 121 million vaccine doses have been administered in the US as of Saturday, according to the data, published through the CDC's vaccine tracker. About 35 million more doses - or nearly 157 million doses -of the vaccine have been delivered to medical providers, according to the data.

More than 43 million people in the US have been fully vaccinated, with Americans receiving either both of the two-shot Pfizer or Moderna vaccines or the single-shot Johnson & Johnson vaccine. More than 79 million people in the US have received at least one dose of the two-shot vaccines, according to the CDC.

And more than 40% of people aged 65 and older, who carry a higher risk of serious illness and death, have been fully vaccinated for the disease, while 68% of seniors in this age range have received at least one part of the vaccine.

President Joe Biden has said he expects that all adults in the US who wish to be vaccinated will be able to get a shot by the beginning of May. Public health officials have stressed the importance of continued precautions, even for vaccinated people, like social distancing and mask-wearing in public spaces.

Earlier in March, however, the CDC released guidelines for fully vaccinated Americans that said fully vaccinated people could gather indoors together without masks or distancing. It also said fully vaccinated people could gather indoors with unvaccinated people "from a single household who are at low risk for severe COVID-19," without masks or distancing.