What is the current TB situation at Archbishop Riordan High School?

There are three active TB cases and over 50 latent TB infections identified within the school community since November 2025.

What measures are being taken to address the TB outbreak?

Mandatory TB evaluations are required for all students and staff, with repeat assessments every eight weeks, and preventive treatment is being offered.

How does tuberculosis spread?

TB is an airborne contagion that can be spread through coughing, sneezing, or saliva.

Home / Health / TB Outbreak Shakes San Francisco High School

TB Outbreak Shakes San Francisco High School

3 Feb

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Summary

Three active TB cases linked to Archbishop Riordan High School.
Over 50 latent TB infections identified in the school community.
Mandatory TB evaluations required for all students and staff.

TB Outbreak Shakes San Francisco High School

An outbreak of tuberculosis (TB) has been identified at Archbishop Riordan High School in San Francisco. The San Francisco Department of Public Health issued an advisory on January 29, 2026, detailing the situation. Three active TB cases have been diagnosed among individuals associated with the school since November 2025.

In addition to the active cases, more than 50 latent TB infections have been detected within the school community. While latent TB is not contagious, it can progress to active disease in a percentage of individuals. Preventive treatment is being administered to all affected individuals.

All students and staff at the school are mandated to undergo TB evaluation, irrespective of symptoms. Repeat assessments will be conducted every eight weeks until the outbreak is resolved. Those showing symptoms are instructed to remain home and obtain medical clearance before returning to school.