Related works in this issue of Cell Host & Microbe (Bronner et al., 2018) and in a recent issue of Cell Reports (Hiyoshi et al., 2018) demonstrate how loss-of-function mutations in butyrate utilization and lipopolysaccharide O-antigen processing contribute to evasion of innate host defenses and the convergent evolution of distinct typhoidal Salmonella lineages.
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