**9. Conclusion**

Through decades several outbreaks related to *E. coli* O157:H7 have been occurred. According to *E. coli*'s genetic traits, the number of patients in outbreaks, *E. coli* O157:H7 may be considered a potentially deadly biological weapon agent, which anytime can be used for mass destruction.

Escherichia coli *O157:H7 and Its Effect on Human Health DOI: http://dx.doi.org/10.5772/intechopen.101825*
