Mass COVID-19 vaccination campaign begins this week with walk-in appointments across metro Detroit The Congressional Black Caucus is holding mass COVID-19 vaccination clinics throughout metro Detroit where no registration is required. The caucus' goal is to try and counter vaccine hesitancy. Posted at 5:42 AM, May 03, 2021 and last updated 2021-05-03 05:42:40-04 (WXYZ) â The Congressional Black Caucus is holding mass COVID-19 vaccination clinics throughout metro Detroit where no registration is required. The caucus' goal is to try and counter vaccine hesitancy. There will be 12 location...