Vaccinations slowing in Michigan; appointments, walk-ins open up Hospitals in Southeast Michigan report slowing, some taking walk-in appointments Pharmacies showing many open appointments over the past week Nic Antaya for Crain's Detroit Business COVID-19 vaccinations appear to be slowing somewhat in Michigan, according to a Crain's analysis. State data shows a 28 percent decline to 280,000 in total residents in Michigan vaccinated in the week ending April 18 from 358,000 ending April 11. Residents were fully vaccinated either with two doses of the Moderna or Pfizer-BioNTech vaccine, or the Johnson & Johnson one-dose vaccine before the pause ordered April 13. The previous three weeks starting in late March the total residents vaccinated increased from 202,000, to 244,000 and 273,000 in early April.