Do we have to wait for one group to be vaccinated before the next group can receive vaccine? How long will it take to move between phases?

Vaccination of groups in one phase will likely not be complete before vaccination in another phase begins. Vaccination in these phases will likely overlap. 

The timing of the start of vaccination in a phase is dependent on the guidance from CDC or ACIP, supply of vaccine from the manufacturer, how vaccine is allocated from the federal level to Michigan, and capacity to administer the vaccine to populations.

We hope to be able to offer vaccination to all individuals age 16 or older in Michigan in late spring. Individuals 16 and 17 years of age will need to receive the Pfizer vaccine only. The Moderna vaccine is only recommended for those 18 years and older.