https://www.mercurynews.com/2021/08/11/stanford-university-to-require-weekly-covid-testing-regardless-of-vaccination-status/

Stanford University will require students to undergo weekly COVID-19 testing, regardless of their vaccination status, becoming one of the first campuses in the country with such a mandate.

The announcement comes just weeks after at least seven vaccinated students on campus this summer became sick and tested positive for so-called breakthrough cases.