MADISON, Wis. — Wisconsin says the number of active COVID-19 cases within the football program increased to 16 as of Thursday morning.

School officials said they learned of one more positive polymerase chain reaction test result late Wednesday, and that two more were confirmed Thursday. The three additional people to test positive included two staff members and one player.

This news comes one day after Wisconsin announced it was canceling its scheduled Saturday game at Nebraska due to the number of players and staffers who had tested positive.

Fifteen of the football program's positive COVID-19 test results have come since Saturday, the day after the ninth-ranked Badgers' season-opening 45-7 victory over Illinois. One of the people to test positive is Wisconsin coach Paul Chryst.

– the day the Badgers are currently scheduled to host Purdue.

School officials announced Thursday that athletic director Barry Alvarez has tested negative. Members of the football program continue to take part in daily testing.

Wisconsin has secured hotel rooms for football players who haven't tested positive, as the school attempts to separate those who live together and to mitigate the spread of the virus. Each player has his own hotel room. The rooms are all in the same area of the building to limit exposure to other hotel guests.