LOS ANGELES—Eligible students and staff at University of California (UC) campuses will be required to obtain COVID-19 vaccine booster shots, the system’s president said Dec. 21, while indicating some campuses could temporarily shift to remote courses in January. In a letter sent to chancellors at the 10 UC schools statewide, Dr. Michael Drake called for each campus to develop “a plan for a January return to campus that mitigates public health impacts.” “This may require campuses to begin the term using remote instruction in order to allow students to complete an appropriate testing protocol as they return to campus,” Drake wrote. Drake added that the length of remote instruction varies from campus to campus depending on “local conditions.” He also wrote that campuses should not be holding any large gatherings. “Large, congregant events, particularly indoors, should be avoided in the opening weeks of your winter quarter or spring semester.”