The University of Missouri announced Monday that a student was diagnosed with active tuberculosis. School officials said the student voluntarily left campus.The university is working with doctors and the health department to identify individuals who might need testing.“The student has been extremely cooperative with campus and local health officials,” said Dr. Susan Even, director of the MU Student Health Center. “We’ll continue to provide any assistance necessary to the Columbia/Boone County Health Department and provide the community with periodic updates.”TB is most often spread when an individual coughs near other individuals. It is spread only through the air and is not spread by touching surfaces or by sharing food or drink, according to the Centers for Disease Control and Prevention.Students at highest risk will be asked to receive TB testing at an appropriate location, which includes the Student Health Center, University Hospital or the Columbia/Boone County Health Department. Any individuals with positive test results will be provided with appropriate treatment, the university said in a news release.