STX1A and hemolytic-uremic syndrome: One mutton-sourced O26:H11 isolate in this study carried stx1a, eae, ehxA, and efa1. O26:H11 STEC strains carrying stx1a, eae, ehxA, and efa1 have been reported in HUS cases (Hua et al., 2021; Mellmann et al., 2008).