E. coli

 E. coli is a widespread organism that is normally found in the guts of animals and humans. There are many different types, some of which are capable of causing illness. One uncommon type which can cause serious illness is E. coli O157 which has been found in raw and undercooked meats, unpasteurised milk and dairy products, and raw vegetables.

Illness may be caused by a small number of bacteria, so cross-contamination can lead to illness. The bacteria can survive refrigeration and freezer storage, but thorough cooking of food and pasteurisation of milk will kill them.

Symptoms normally take about 2 days to develop but may start within a day, or take up to 5 days to come on. The main symptom is diarrhoea. In some cases, particularly in children under the age of 5 and in the elderly the symptoms can be more severe and sometimes lead to death.

For more information on E. coli 0157 please download the fact sheet on the right.