FIG 1.

Maximum-likelihood tree of the spliced sequences of the 7 loci (3,036 bp) for the 80 strains. Seventy Cronobacter strains isolated from PIF or an infant formula production factory, 4 reference strains (C. sakazakii ATCC BAA-894, C. sakazakii ATCC 29004, C. sakazakii ATCC 29544, and C. sakazakii ATCC 12868), and 6 type strains (C. malonaticus CDC 105877^T, C. dublinensis LMG 23823^T, C. turicensis LMG 23827^T, C. universalis NCTC 9529^T, C. condimenti LMG 26250^T, and C. muytjensii ATCC 51329^T) were included. The tree was obtained using MEGA, version 6.0, with 1,000 bootstrap replicates.