A University of California at Berkley student was recently diagnosed with tuberculosis and campus health officials believe about 200 people might have been exposed.
The slow-growing bacterial infection is spread over an extended length of time through an infectious person's coughs or sneezes. The school is estimating about 225 students and faculty were in close contact with the infected student.
The student diagnosed with the illness was immediately isolated from the campus population and will stay in isolation until the threat of infection has cleared, Berkeley city spokeswoman Mary Kay Clunies-Ross told the Chronicle.
Those people are receiving detailed information about how, when and where they should be screened, according to a statement from the city's public health division.
People who were not in prolonged, close contact should not be worried about infection, according to the statement.