Why the Bay Area has been a tuberculosis hotspot for more than a century

Tuberculosis, the bacteria often associated with the deaths of Victorian-era monarchs, was recently contracted by more than 200 high school students in San Francisco. The outbreak served as a reminder of the historical foothold it has in the Bay Area.

Alameda, Santa Clara, San Francisco and San Mateo counties each rank among the top 10 in the state when it comes to cases of tuberculosis, or TB, with rates as high as three times the national average.

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