10 Sep 2024 --- Researchers project that one of three pioneer bacteria that dominate the gut microbiome of newborn babies has the potential to develop personalized infant therapeutic probiotics. Bifidobacterium breve was genetically adapted to use the nutrients found in breastmilk entirely and can block potentially damaging pathogens from colonizing a baby’s gut. Three pioneer bacteria — the first organisms to colonize a new environment — drive gut microbiota in infant microbiome profiles: B. breve, B. longum subsp. longum and Enterococcus faecalis.