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E. coli is the type species of the genus (Escherichia) and in turn Escherichia is the type genus of the family Enterobacteriaceae, where the family name does not stem from the genus Enterobacter + "i" (sic.) + "aceae", but from "enterobacterium" + "aceae" (enterobacterium being not a genus, but an alternative trivial name to enteric bacterium).
Escherichia coli have an incubation period of 12–72 hours with the optimal growth temperature being 37 °C. Unlike the general coliform group, E. coli are almost exclusively of fecal origin and their presence is thus an effective confirmation of fecal contamination. Most strains of E. coli are harmless, but some can cause serious illness in ...
The 2024 United Kingdom shigatoxigenic E. coli outbreak was a Shigatoxigenic Escherichia coli (STEC) O145 outbreak that is believed to have occurred in prepackaged supermarket sandwiches, salads, wraps distributed to and sold in multiple supermarket chains across the United Kingdom such as Aldi, Asda, Co-op, Morrisons, Sainsbury's, WHSmith, and Tesco.
Escherichia coli (E. coli), common Gram-negative gut bacterium widely used in molecular genetics. Main lab strain is 'K-12'. Bacillus subtilis, endospore forming Gram-positive bacterium. Main lab strain is '168'. Caulobacter crescentus, bacterium that divides into two distinct cells used to study cellular differentiation.
Escherichia coli is one of the most important model organisms, and its genetics and biochemistry have been closely studied. Some enterobacteria are important pathogens, e.g. Salmonella, or Shigella e.g. because they produce endotoxins. Endotoxins reside in the cell wall and are released when the cell dies and the cell wall disintegrates.
It does not belong to the fecal coliforms (or thermotolerant coliforms) group of bacteria, unlike Escherichia coli, because it is incapable of growth at 44.5 °C in the presence of bile salts. [citation needed] Some of them show quorum sensing properties. [2] [3] One clinically important species from this genus is E. cloacae.
A review of 22 studies in 1998 [10] confirmed that the health risks for swimmers increased as the number of indicator bacteria increased in recreational waters and that E. coli and enterococci concentrations correlated best with health outcomes among all the indicators studied. The relative risk (RR) of illness for swimmers in polluted ...
An outbreak of the Escherichia coli O157 bacterium occurred in South Wales in 2005. It was the largest outbreak of E. coli O157 in Wales and the second largest in the UK. [1] 157 cases were identified in the outbreak; 31 people were hospitalized, and there was a single fatality. Most of the 157 cases identified were children, attending 44 ...