Mucous MembraneHumansNasopharynxNasopharynxVaginaInfant, NewbornRrnaBacterialBacterial TaxaBacteriumMucosaHumanBabyNeonateNewbornbody habitatsppbacterial communitymicrobiotaneonatemucosaoral mucosacommunity-wide perspectivegoal of the present studydevelopment remainshuman microbiome development remainsinitiation stage of human microbiome development remainssingle body habitatspecific bacterial taxamicrobiota 's establishmentmaternal bacteriumwide array of microbeinitial microbiotastructure of the initial microbiotainfantmodehabitatmicrobiomeinitiation stagemultiple body habitat