What is E. coli?
Escherichia coli (E. coli) is a gram-negative bacterium found in the intestines of humans and animals. While most strains are harmless and essential for a healthy digestive system, certain pathogenic strains of E. coli can cause serious health issues. These harmful strains are often transmitted through eating contaminated food, such as undercooked meat, raw vegetables, or unpasteurized milk. Infections caused by E. coli are referred to as coli infections.
A common symptom of E. coli bacteria infections is diarrhea, which can range from watery to bloody. Other coli symptoms include stomach cramps, nausea, and fatigue. One of the most severe outcomes of coli infections is hemolytic uremic syndrome (HUS), which can lead to kidney failure. Shiga toxin-producing E. coli (STEC) is a particularly dangerous strain that causes bloody diarrhea and can result in life-threatening complications (World Health Organization, 2018).
Coli infections are most commonly associated with eating contaminated food, but they can also spread through person-to-person contact or contaminated water. Subtypes like ETEC and EPEC frequently cause watery diarrhea in resource-limited settings, often affecting young children and travelers. Due to its significant impact on public health, prompt diagnosis and management of E. coli infections are critical to preventing severe complications (Mueller & Tainter, 2023).










