Escherichia coli strain ET20

Escherichia coli strain ET20 is a Gram-negative, rod-shaped bacterium that exhibits mobility and possesses flagella. This strain is a facultative anaerobe, capable of thriving in both oxygen-rich and oxygen-poor environments, and it optimally grows at 37°C, falling within the mesophilic temperature range. E. coli ET20 is characterized by its free-living biotic relationship and is associated with a diverse range of hosts, including Homo sapiens, various mammals (such as Bos taurus, Sus scrofa, and Canis lupus familiaris), birds (e.g., Gallus gallus and Meleagris gallopavo), and even plants like Solanum lycopersicum and Brassica oleracea var. italica. This strain is notable for its significant health impacts, particularly in humans, where it is implicated in a wide array of infections and diseases, including urinary tract infections (UTIs), gastrointestinal infections, and more severe conditions such as septicemia and neonatal meningitis. The strain is also linked to complications like hemolytic uremic syndrome (HUS) and various forms of diarrhea, including hemorrhagic colitis. The presence of E. coli ET20 in multiple hosts highlights its ecological versatility and potential for cross-species transmission. This adaptability may facilitate its role in both environmental and clinical settings, where it can contribute to the spread of pathogenic traits among different species, thereby impacting public health and disease management strategies.