Phylogenetic analysis based on the VP4 gene nucleotide sequences of Moroccan P[14] strains, and sequences from the Genbank database. Moroccan strains obtained from vaccinated children are marked with a filled circle. Moroccan strains isolated from goat and bovine are marked with a filled and an empty triangle respectively. The lineages appeared at the right. Numbers at the nodes indicate bootstrap values (values <60% are not shown).