Specifically, Streptococcaceae (Lactococcus genus) and Verrucomicrobia (Akkermansia genus) expanded early, at 3 dpi, along with Gammaproteobacteria (E. coli/Shigella genus) in Tph1+/+ littermates followed by the expansion of Bacteroidota (Marinifilaceae, Rikenellaceae, Odoribacter and Alistipes) at the expenses of Gammaproteobacteria at 7 dpi, in concomitance with infection resolution, as already shown41. This evidence concerns the gene TPH1 and infection.