A strain of the bacterium Escherichia coli. Causes foodborne illness.

On 2001, Saitama Prefecture let the characters of [[Azumanga Daioh]] appear on the poster of the prevention of O-157 epidemic campaign (post #57612).

h4. External links

* "Wikipedia: Escherichia coli O157:H7":http://en.wikipedia.org/wiki/Escherichia_coli_O157:H7
o157