Nation 90 cases of UK COVID-19 variant B.1.1.7 reported at Michigan prison, state says February 17, 2021 Angie Jackson, Detroit Free Press Comments Off on 90 cases of UK COVID-19 variant B.1.1.7 reported at Michigan prison, state says A Michigan prison appears to be the site of a COVID-19 variant outbreak, where 90 cases of the more contagious B.1.1.7 have been identified.