[Influences of maternal and external environment on the early establishment of gastrointestinal microflora of neonatal baby--a review].

The human intestinal microbiota is essential in nutrients utilization, organ development, host metabolism, pathogen resistance, and regulation of immune responses. The establishment of early gut microflora in newborn infants experiences periods from less to more, simple to complex and unstable to stable and can be influenced by various factors. This article summarizes the effects of delivery mode, delivery period, rearing methods as well as antibiotics on the development of intestinal bacterial community.