The Steelers have added two more players to the Reserve/COVID list on Thursday.
Defensive end Isaiah Buggs and running back Anthony McFarland Jr. have been placed on the list.
They join inside linebacker Devin Bush, offensive lineman Zach Banner and linebacker Marcus Allen who were added to the list on Wednesday.
The Chiefs currently have 10 players, including tight end Travis Kelce and wide receiver Tyreek Hill, on their COVID list.
But Kansas City has not reported any new cases the past two days.
Sunday afternoon's game is still scheduled to move forward in Kansas City.
