nonO157tyypit
nonO157tyypit refers to strains of Escherichia coli that do not produce the Shiga toxin 157. Escherichia coli, often abbreviated as E. coli, is a common bacterium found in the intestines of humans and animals. While most E. coli strains are harmless and even beneficial, some can cause illness.
The designation O157 is specific to a particular serotype of E. coli. Certain O157 serotypes, most notably
Therefore, "nonO157tyypit" encompasses all E. coli strains that are *not* the O157 serotype and/or do not produce