On December 14, Leonardo Moreno successfully defended his thesis, titled “On Bioinformatics of the Human Gut,” for which he earned the distinguished Magna Cum Laude distinction. During his PhD, he correlated bacterial and viral diversity in the human gut, revealing a pattern driven by bacteriophages and not eukaryotic viruses. He also focused on the description of uncultivated viral genomes, retrieving thousands of transposable phages from public databases of metagenomic assemblies. The approach he developed has the potential to enable the characterisation of the viral fraction of the human gut, facilitating future investigations into the role of phages in the assembly and homeostasis of the gut microbiome. Congratulations to Dr. Moreno on this outstanding achievement!