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San Francisco High School Halts In-Person Classes After Third TB Case

Health officials are conducting school-wide testing with contact tracing, aiming to finish initial screening by mid-February.

The Archbishop Riordan High School band readies to play on the court before the varsity basketball team’s game against St. Ignatius in San Francisco on Jan. 23, 2018. 
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Students make their way to classrooms at Archbishop Riordan High School in San Francisco. The private school said it was taking a number of steps, including offering remote learning, after at least three people tied to the school were diagnosed with tuberculosis. 
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Overview

  • Roughly 50 latent tuberculosis infections have been identified alongside three active cases, with preventive treatment being arranged.
  • A hybrid schedule is planned for February 9–20, with on-campus attendance limited to students who submit negative TB tests.
  • School and city leaders aim to test the entire community by February 13, followed by reassessment of results every eight weeks.
  • Non-classroom activities, including many sports, are canceled or restricted, and students without test results are barred from events.
  • Infectious-disease experts highlight TB’s 2–10 week incubation period, which can complicate early screening after the first November case.