Oakland County’s health department moved quickly Saturday to impose a countywide mask mandate to curb the spread of the coronavirus, one day after the Michigan Supreme Court struck down the law Gov. Gretchen Whitmer has used to require mask wearing in public.

The public health order from Michigan’s second most populous county requires mask usage in indoor public spaces outside of the home, including students in grades kindergarten through 12th grade when inside school buildings.

Oakland County’s order requires outdoor mask wearing when individuals cannot maintain 6 feet of social distance among themselves and applies to “athletes training for, practicing for, or competing in an organized sport.”

The order adopts language similar to Whitmer’s mask mandate, which is now in legal limbo after the Michigan Supreme Court narrowly ruled her use of a 1945 emergency powers law unconstitutionally “indefinitely” empowered the governor to make law without the Legislature’s involvement.

Oakland