In the conditions used in our laboratory we observed that, beside the EAggEC, other E. coli pathogroups were susceptible to infection with different stx2-phages obtained from a number of different STEC types including EAHEC, typical STEC O157 and non-O157 as well as from an hybrid ETEC/STEC strain isolated from a patient with diarrhea in Denmark (Dr. F. Scheutz, personal communication). The gene discussed is STX2; the disease is infection.