The city of Detroit is hoping to push vaccination numbers up by sending teams door-to-door throughout neighborhoods to promote walk-in sites.
The city says Detroit Health Department teams began fanning out Saturday and on Monday started ramping up efforts in six neighborhoods surrounding recreation centers, a community resource center and a church where vaccinations are being held.
So far, canvassers have knocked on 4,936 doors through Monday.
Fewer than 31% of city residents have been vaccinated, compared with more than 50% statewide.
Nearby counties also have outpaced Detroit from 48.5% in adjacent Macomb County to 59.5% in Washtenaw County to the west.