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Referred to as E. coli O157:H7 or Shiga toxin-producing E. coli (STEC), this strain of E. coli can be particularly dangerous and even life-threatening. The primary sources of STEC outbreaks are ...
E.coli is the most common cause of community-acquired bacteremia accounting for approximately 75% of cases. [24] E.coli bacteremia is usually the result of a urinary tract infection. Other organisms that can cause community-acquired bacteremia include Pseudomonas aeruginosa, Klebsiella pneumoniae, and Proteus mirabilis.
E. coli is a gram-negative, facultative anaerobe, nonsporulating coliform bacterium. [18] Cells are typically rod-shaped, and are about 2.0 μm long and 0.25–1.0 μm in diameter, with a cell volume of 0.6–0.7 μm 3. [19] [20] [21] E. coli stains gram-negative because its cell wall is composed of a thin peptidoglycan layer and an outer membrane.
E. coli bacteria often carry multiple drug resistance plasmids, and under stress, readily transfer those plasmids to other species. Mixing of species in the intestines allows E. coli to accept and transfer plasmids from and to other bacteria. Thus, E. coli and the other enterobacteria are important reservoirs of transferable antibiotic ...
Children, the elderly and people with compromised immune systems are most at risk to developing harmful gastrointestinal symptoms if exposed.
One of the last major E. coli outbreaks took place in 2015, when contaminated food served at Chipotle Mexican Grill was linked to around 60 cases across the nation, including several in California.
1993 Jack in the Box E. coli outbreak: E. coli O157:H7: undercooked hamburgers: Jack in the Box >700 [19] 4 [19] First deadly foodborne E. coli O157:H7 outbreak. 2003: 2003 United States hepatitis A outbreak: hepatitis A virus: green onions: 555 [22] 3 [22] Largest foodborne hepatitis outbreak. 2006: 2006 North American E. coli O157:H7 outbreak ...
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 ...