How does e-coli start?

Answer 1

E. coli (Escherichia coli) bacteria are commonly found in the intestines of humans and animals, where they play a role in digestion. Some strains can become pathogenic through mutations or by acquiring virulence factors from other bacteria. Infection often occurs through the consumption of contaminated food or water, especially undercooked ground beef, unpasteurized milk, or raw vegetables. Once ingested, harmful strains can cause gastrointestinal illness and other serious health issues.