NFL updates protocols in response to COVID-19 cases

Chicago Bears head coach Matt Nagy is seen before an NFL football game against the Green Bay Packers Sunday, Dec. 12, 2021, in Green Bay, Wis. (AP Photo/Aaron Gash)

Cleveland Browns tight end David Njoku runs a route against the Baltimore Ravens during the first half of an NFL football game, Sunday, Nov. 28, 2021, in Baltimore. (AP Photo/Gail Burton)

Seattle Seahawks wide receiver Tyler Lockett (16) celebrates with teammates after catching a pall for a two-point conversion against the Houston Texans during the second half of an NFL football game, Sunday, Dec. 12, 2021, in Houston. (AP Photo/Justin Rex )

Miami Dolphins wide receiver Jaylen Waddle (17) catches the ball during NFL Football practice at Baptist Health Training Complex in Hard Rock Stadium on Wednesday, Dec. 15, 2021 in Miami Gardens, Fla., in preparation for their game against the New York Jets on Sunday. (David Santiago /Miami Herald via AP)