AAD	Antibiotic-Associated Diarrhea
ARGs	Antibiotic Resistance Genes
CDI	Clostridioides Difficile Infection
CNS	Central Nervous System
ENS	Enteric Nervous System
ESBL	Extended-Spectrum β-Lactamase
FDA	Food and Drug Administration
FMT	Fecal Microbiota Transplantation
FOS	Fructooligosaccharides
GOS	Galactooligosaccarides
GRAS	Generally Recognized As Safe
HMC	Human Microbiome Cloud
IBD	Inflammatory Bowel disease
IBS	Irritable Bowel Syndrome
NEC	Necrotizing Enterocolitis
PRRS	Pattern Recognition Receptors
RCTs	Randomized Controlled Trials
SCFAs	Short-Chain Fatty Acids