As in the lung, Proteobacteria (Escherichia-Shigella genus) expanded early in infection in Tph1+/+ mice along with Firmicutes (Enterococcus, Lactococcus and Clostridium sensu_strictu genera, among others), the Desulfovibrio genus and Bacteriodota (Parabacteroides genus) and subsided late in concomitance with the expansion of Firmicutes (Lachnospiranaceae_NK4A136_group, Turicibacter, Duboisella and Lactococcus genera, among others) and Bacteriodota (Prevotellaceae_NK3B31_group and Rikenella genera). This evidence concerns the gene TPH1 and infection.