Evidence of horizontal gene transfer between human maternal microbiome and infant gut microbiome

Researchers have discovered a new mode of vertical mother-to-infant microbiome transmission, where microbes in the maternal gut shared genes with microbes in the infant gut during the perinatal period starting immediately before birth and extending thought the first few weeks after birth. This horizontal gene transfer allowed maternal microbial strains to influence the functional capacity of the infant microbiome, in the absence of persistent transmission of the microbial strains themselves.

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