SMOX and infection: In the zebrafish larva model, infection of zebrafish embryos with 4 × 102 CFU of HiRiC ST1971 strains, including b164, 19C16, and R530, led to 67 to 77% mortality at 2 days postinfection, which was very similar to that of high-virulence control PAO1, for which 79% mortality was obtained at 2 days postinfection (Fig. 4).