The Bills have run into COVID-19 trouble. They are placing Dawson Knox on their reserve/COVID-19 list. The second-year tight end tested positive for the coronavirus, Tom Pelissero of NFL.com tweets. The Bills confirmed the positive test.

Fellow Buffalo tight ends Tommy Sweeney, Lee Smith and Nate Becker (practice squad) have been identified as close contacts and will also miss Sunday’s game against the Jets. Sweeney was already on Buffalo’s PUP list.

The game remains on for noon CT Sunday, however. Tyler Kroft and Reggie Gilliam are the other tight ends on the Bills’ roster. Buffalo promoted four players from its practice squad — guard Jordan Devey, linebacker Andre Smith, cornerback Dane Jackson and wide receiver Duke Williams — but has not made any other moves at tight end.

This game becomes the latest to monitor as one that could cause a schedule change. The timing is similar to Cam Newton‘s positive test weeks ago, and with the league’s beefed-up protocols in the wake of Newton’s positive and the Titans’ outbreak, the Bills will be extremely shorthanded at tight end. A rookie UDFA, Gilliam was already on Buffalo’s active roster along with Knox, Smith and Kroft. The Bills have Kroft and Gilliam available at the position ahead of Sunday’s Jets rematch. The latter has yet to play in a game.

Kroft’s wife going into labor and delivering the couple’s baby Friday morning led to the veteran tight end being spared from this chain reaction, per Adam Schefter of ESPN.com (on Twitter). Kroft attended Bills practice Friday, but Schefter notes his missing position meetings allowed him to avoid getting caught up in this potential outbreak. A former Bengals draftee, Kroft signed with the Bills last year. Knox and Kroft each have six catches this season — most among Bills tight ends; the latter has scored two touchdowns.