Children are born already with their microflora.
Babies are born with a sterile (relatively) bowel. Only after birth is it populated by a variety of bacteria, including when passing through the birth canal from mom’s vagina, and during the initiation of breastfeeding and in General close contact with the mother (because it is believed to be the child natural childbirth and rooming-in with mother from the first minutes of life). The combination of these microorganisms to settle (for the colonized) of the gut, called microflora.
Who lives in the intestine of the baby? First, bifidobacteria, lactobacilli, Bacteroides and Escherichia coli – the so-called obligate flora, which is present in the gut of every human. But there are other, optional microorganisms, among them opportunistic Klebsiella, streptococci, clostridia, staphylococci.
Their very existence and precise quantitative correlation says nothing. If the entire microbial family lives together, the intestine performs its functions: fermented and digests the food, stores vitamins and energy, forms the immune system and cleans the body of toxins.