Feeling unwell after a COVID vaccine shot? Experts say that's a good thing Your body's immune system is responding to an antigen While Detroit has been praised for the efficiency of its vaccine roll-out at TCF Center, the cityâs overall vaccination rates lag behind other counties. Posted at 4:24 PM, Mar 17, 2021 and last updated 2021-03-17 18:21:21-04 (WXYZ) â While Detroit has been praised for the efficiency of its vaccine roll-out at TCF Center, the cityâs overall vaccination rates lag behind other counties. To find out whatâs causing "vaccine hesitancy" a recent survey was done with the homeless population.