No antibiotics in child with GE even coz is bacterial... HUS is one of microangiopathic hemolytic anemia, when child has GE by E.coli ..E.coli sends its toxin (shiga like toxin ) to capillary surrounds and that induce plt adhesions which may lead to thrombocytopenia..then when RBCs goes into that capillary,RBCs may be fragmented (which is called shistocytes. _So triad of HU$ is hemolysis + thrombocytopenia+kidney impairement ... _No Ab in HU$ _ NO AB in GE ...