Coronavirus Today: Do we need to cancel Christmas?

Students and staff at the University of California who are eligible for a booster shot will be required to have them when they return to campus after winter break, according to a letter sent to chancellors Tuesday by UC President Michael V. Drake. (Incidentally, three UC campuses — those in Irvine, Santa Cruz and San Diego — have delayed the start of in-person classes for the winter quarter by two weeks because of Omicron.)