Mayor Muriel Bowser plans to boost the District’s COVID-19 vaccination rate this month as part of a nationwide challenge to accelerate vaccine rollout in each city before the Fourth of July.

The challenge, which is organized by the United States Conference of Mayors, is part of an effort to meet President Joe Biden’s goal to vaccinate 70 percent of all American adults by July 4. A total of 79 mayors from 30 states have joined the challenge, which calls on mayors to partner with local businesses and offer incentives to encourage vaccination in their respective cities.

City data estimates about 42 percent of residents are fully vaccinated and an additional 10 percent are partially vaccinated in D.C. Other notable mayors to participate in the challenge include Lori Lightfoot of Chicago, Keisha Lance Bottoms of Atlanta and Jenny Durkan of Seattle.

Bowser’s commitment to push for increased vaccination rates in the District comes as University officials open a vaccination site in the Marvin Center accessible to anyone 12 years and older. District officials have set up eight walk-up vaccination sites throughout the city, but four are set to close by the end of June.