Variants of S. Infantis
Uncommon Salmonella Infantis variants displaying only flagellar antigens, phenotypically showed identical incomplete antigenic formula but differed by molecular serotyping. Although most formed rough colonies, all shared antimicrobial resistances and the presence of usg gene with wild type (WT) S. Infantis. Moreover, they were undistinguishable from WT S. Infantis by whole genome sequencing.