In the past three weeks, the number of COVID-19 hospitalizations has more than doubled, from about 824 on March 1 compared to 1,687 reported Tuesday, March 23. Currently, 356 coronavirus patients are in ICUs, a 58% increase compared to the 225 in ICUs on March 1.

The increases are being driven by younger adults: Since March 1, hospitalizations increased by 633% for adults ages 30-39 and by 800% for adults ages 40-49, according to inpatient data collected by the MHA.

Meanwhile, hospitalizations for those age 80 and older are up 37%.

About 44% of Michiganders in that age group are fully vaccinated and more than two-thirds have had at least one dose.