Local health officials require TB evaluation for all students and staff
An outbreak of tuberculosis (TB) has been linked to a San Francisco high school.
The San Francisco Department of Public Health (SFDPH) issued a health advisory on Jan. 29 about the outbreak, which has been tied to Archbishop Riordan High School.
TB is a curable bacterial infection that targets the lungs, but can also infect other organs, according to Johns Hopkins. It is an airborne contagion that can be spread through coughing, sneezing or saliva.
Three active TB cases have been diagnosed among people associated with Archbishop Riordan High School since November 2025, according to the advisory, and over 50 latent TB infections have been identified within the school community.