In the maternal colostrum there are 400 types of friendly bacterias. Collecting colostrum and giving it sublingual to extreme preterm infants is the best way to "give" probiotids.
The commercial probiotics are not including the needed probiotics and prebiotics for newborns.
The expected outcome of the Microbiome project and the human milk gut microbiome and immunity project is to leads us to a new area of selected highly effective probiotics for newborns