The MDHHS originally said in January that 21 shipments containing 11,900 Moderna vaccines were unusable. Author: 13 ON YOUR SIDE Staff Published: 4:13 PM EST February 1, 2021 Updated: 7:51 AM EST February 2, 2021 MICHIGAN, USA — Doses of the COVID-19 vaccine shipped to Michigan that were thought to be unusable because of temperature control issues can actually be used, according to the Centers for Disease Control and Prevention (CDC). The Michigan Department of Health and Human Services (MDHHS) learned Monday that 8,900 Moderna vaccine doses shipped last month can be used as long as they were stored properly in the time since. Initial reports from the state indicated 11,900 doses were impacted by this issue, but an additional 3,000 doses headed for Michigan last month were held back by the distributor out of similar concerns and replaced.