University of Washington and Washington State will require fans 12 years of age and older to show proof of COVID-19 vaccination or a negative COVID-19 test within 72 hours of games and athletic events.
WSU and UW announced the mandate on Tuesday, joining the professional teams such as the Seahawks, Sounders and Kraken, in implementing a vaccination requirement to attend home games.
The Seahawks will begin enforcing their vaccine mandate on Sept. 19 when Seattle plays its home opener against the Titans.
The Cougars' vaccine mandate for fans attending events at Gesa Field will begin on Oct.