SFGate May 06, 2026 • 21:11

'This is a big outbreak': Nearly 1 in 5 affected by TB at SF school - SFGATE

By Gillian Mohney

'This is a big outbreak': Nearly 1 in 5 affected by TB at SF school - SFGATE

New testing is starting at Archbishop Riordan High School as officials work to keep tuberculosis cases from spreading again.

Seven people were diagnosed with active tuberculosis during an outbreak that started in November 2025 at Archbishop Riordan High School in San Francisco. 
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