More than a year and a half into the coronavirus outbreak, large shares of Americans continue to see the coronavirus as a major threat to public health and the U.S. economy. And despite widespread vaccination efforts, 54% of U.S. adults say the worst of the outbreak is still to come.

A new national survey, conducted prior to President Joe Biden’s announcement of COVID-19 vaccine mandates for employers, finds that 73% of those ages 18 and older say they’ve received at least one dose of a vaccine for COVID-19, with the vast majority of this group saying they have received all the shots they need to be fully vaccinated. About a quarter of adults (26%) say they have not received a vaccine.