Escherichia coli, commonly known as E. coli, is a type of bacteria found in the intestines of humans and animals. Most strains are harmless and play a vital role in digestion, but some can cause foodborne illnesses. These harmful strains can lead to symptoms like diarrhea, abdominal pain, and vomiting. E. coli is often associated with contaminated food or water, particularly undercooked meat and unwashed vegetables. To prevent infection, it is essential to practice good hygiene, such as washing hands and cooking food thoroughly. Understanding E. coli helps in promoting food safety and public health.