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. 2010 Jan 22;5(1):e8851. doi: 10.1371/journal.pone.0008851

Figure 1. Annual number of TB cases in San Francisco, January 1993–December 2005.

Figure 1

(A) Non-homeless: general population, exclusive of homeless. (B) Homeless. The rate of decline over time in the number of TB cases is much faster for the non-homeless than that of the homeless. Red line: linear fit.