Salmonella Persist in Activated Macrophages in T Cell-Sparse Granulomas but Are Contained by Surrounding CXCR3 Ligand-Positioned Th1 Cells

The pathogen Salmonella enterica (Se) can paradoxically persist in hosts while being controlled by IFN- γ-producing Th1 cells. Goldberg et al. show that the bacteria survive by resisting the effects of toxic host molecules in myeloid cells within granulomas, in areas lacking T cells. Infection is constrained by Th1 cells positioned around the granuloma via the CXCR3-CXCL9/10 chemokine axis. (Source: Immunity)

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