PHOENIX (AP) — The number of people in Arizona who are fully vaccinated against the coronavirus has topped 2 million, the state reported Thursday as it opened another mass vaccination site in metro Phoenix.

The 2,024,440 people in Arizona who are fully vaccinated, according to the state's coronavirus dashboard, represent 28% of the state's total population.

A state-run vaccination site opened at Westworld in Scottsdale. Along with three others in metro Phoenix, the state also has sites in Flagstaff, Tucson and Yuma.

The state on Thursday reported 647 additional confirmed COVID-19 cases and 22 more deaths, increasing the state’s totals to 856,451 cases and 17,221 deaths.

The number of infections is thought to be far higher than reported because many people have not been tested, and studies suggest people can be infected with the virus without feeling sick.

There were 584 COVID-19 patients occupying hospital inpatient beds as of Wednesday. That key outbreak metric has ranged between 500 and 600 for nearly a month.