Update 6/18 at 11:55 a.m.

Thirteen Texas football players have tested positive for COVID-19, Texas Athletics officials said in a statement Thursday morning.

All 13 players are now “self-isolating,” and 10 more are in self-quarantine through contact tracing, according to the statement.

These results come one week after two Longhorns tested positive during initial screenings as players began to return to campus for voluntary workouts.

Along with the 11 new cases, four players have tested positive for the COVID-19 antibody.

Texas football players have been engaging in voluntary workouts since Monday, and have taken precautions such as wearing masks, using hand sanitizing stations and undergoing regular temperature checks.

This news comes a day after Travis County had a record 220 new coronavirus cases.

2 Longhorn football players test positive for coronavirus, Texas Athletics says

Two Texas football players have tested positive for the coronavirus, Texas Athletics said Wednesday night in a press release.

One other player tested positive for the COVID-19 antibody, Texas Athletics said. The three players were among the 58 football student-athletes who were onboarded this week ahead of voluntary workouts.

“One of the student-athletes identified symptoms during pre-screening and was tested before arriving on campus, while the other two were tested during the on-campus screening process,” Texas Athletics said in the press release. “Per Athletics Department protocol, their families have been notified, and the two student-athletes with the COVID-19 virus are now self-isolating.”

Texas opened its football facilities Monday after a three-month hiatus due to the coronavirus pandemic. Players returning to campus wore masks, used hand-sanitizing stations and stopped at temperature checkpoints before being admitted to University facilities.

The University statement did not indicate who the players are. Several players participated in a team march to the Texas Capitol last week in honor of George Floyd, who was killed in Minneapolis police custody in May.

The news comes as college athletics programs around the country gradually begin to reopen their facilities for voluntary summer activities. The University of Alabama, Auburn and Oklahoma State are among other universities to confirm COVID-19 cases within their football programs.