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Enterotoxigenic Escherichia coli (ETEC) is a type of Escherichia coli and one of the leading bacterial causes of diarrhea in the developing world, [1] as well as the most common cause of travelers' diarrhea. [2] Insufficient data exists, but conservative estimates suggest that each year, about 157,000 deaths occur, mostly in children, from ETEC.
After the E. coli strain penetrates through the epithelial wall, the endocytosis vacuole gets lysed, the strain multiplies using the host cell machinery, and extends to the adjacent epithelial cell. In addition, the plasmid of the strain carries genes for a type III secretion system that is used as the virulent factor.
Although public water systems use chlorine and other chemicals to kill such organisms like E. coli, some outbreaks have been linked to contaminated water supplies. contaminated food – the most common way to get an E.coli infection is by eating contaminated food such as ground beef, unpasteurized milk and fresh produce.
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 ...
The bacteria enterotoxigenic Escherichia coli (ETEC) are typically the most common except in Southeast Asia, where Campylobacter is more prominent. [2] [3] About 10 to 20 percent of cases are due to norovirus. [3] Protozoa such as Giardia may cause longer term disease. [3] The risk is greatest in the first two weeks of travel and among young ...
Colistin-resistant E. coli was identified in the United States in May 2016. [44] A recent review from 2016 to 2021 fount that E. coli is the dominant species harbouring mcr genes. Plasmid - mediated colistin resistance is also conferred upon other species that carry different genes resistant to antibiotics.
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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.
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