Moreau (hip) has been ruled out ahead of Sunday's matchup against the Seahawks.
The Vikings signed Moreau on Monday, Mike Garafolo of NFL Network reports.
Moreau posted eight tackles (seven solo) and a pass defended in Saturday's 42-17 loss to the Lions.
Moreau recorded five tackles (two solo) and two passes defended, including one interception in Monday's 24-22 win over the Bills.
Moreau is expected to make a second straight start at cornerback Sunday versus Kansas City, Ryan McFadden of The Denver Post reports.
Moreau agreed to terms with the Broncos on Thursday, Aric DiLalla of the team's official site reports
Moreau signed a one-year contract with the Broncos on Tuesday, Mike Garafolo of NFL Network reports.
Moreau racked up 66 tackles (16 solo) and 10 pass defenses over 14 regular-season contests.
Moreau posted eight tackles (five solo) during Saturday's 27-24 loss to the Vikings.
Moreau (oblique) is active Sunday against the Commanders.