主题词：Probiotics and Fermented Foods; Gut microbiota and health; Microbial Metabolites in Food Biotechnology; Diet and metabolism studies; Clostridium difficile and Clostridium perfringens research; Gastrointestinal motility and disorders; Infant Health and Development; Infant Nutrition and Health; Viral gastroenteritis research and epidemiology; Digestive system and related health; Food composition and properties; Pediatric health and respiratory diseases; Animal Nutrition and Physiology; Protein Hydrolysis and Bioactive Peptides; Oral microbiology and periodontitis research; Helicobacter pylori-related gastroenterology studies; Antimicrobial Peptides and Activities; Diet, Metabolism, and Disease; Dermatology and Skin Diseases; Reproductive tract infections research; Immune Response and Inflammation; Tryptophan and brain disorders; Genomics and Phylogenetic Studies; Escherichia coli research studies; Food Allergy and Anaphylaxis Research