An additional 4 patients (4 survivors) were diagnosed with infection-associated hemolytic-uremic syndrome (IA-HUS) based on the detection of STX1 or STX2 genes using Polymerase Chain Reaction (PCR) testing for enterohemorrhagic Escherichia coli (EHEC) from stool specimens. Here, STX2 is linked to hemolytic-uremic syndrome.