Vaginal seeding

Vaginal seeding is a novel procedure whereby vaginal fluids (and hence vaginal microbes) are applied to a new-born delivered by caesarean section, in order to create an equivalent biome to a baby delivered vaginally.[1]

The motivation is that some research has linked deliver by caesarean section to a higher rate of asthma, overweight and other autoimmune conditions.[2] Additionally it has been demonstrated that the process can partially reduce the difference[3] between the biomes of babies delivered by different methods.[4]

Vaginal fluids can host a wide variety of pathogens, and therefore there is a risk of causing infection by using this procedure.[2] A BMJ editorial concluded that "the small risk of harm cannot be justified without evidence of benefit."[2]

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