CARSON CITY, Nev. — Nevada is making changes to its distribution plan for coronavirus vaccines in an effort to get shots into residents’ arms more quickly.

The state received its first vaccine shipment four weeks ago but has been struggling to get people inoculated at the rate officials initially anticipated.

Public health officials announced plans Monday to replace the state’s distribution plan and direct providers to concurrently vaccinate high-risk groups. That includes residents with underlying medical conditions and front-line workers the state deems essential, such as teachers, service industry workers, state legislators and mining industry workers.

The plan also lowers the age threshold for priority distribution from 75 to 70.